LMS.c

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<Windows.h>
#include<time.h>

#define FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO "E:\\CProject FILES\\USER_PASSWOED.txt"
#define FILE_ADDRESS_FOR_BOOK_INFORMATION "E:\\CProject FILES\\BOOK_INFORMATION.txt"
#define FILE_ADDRESS_FOR_UNIQUE_ID "E:\\CProject FILES\\UNIQUE_ID.txt"
#define FILE_ADDRESS_FOR_UNIQUE_ID_FOR_USER "E:\\CProject FILES\\UNIQUE ID FOR USER.txt"

FILE *BOOKS_IN_LIBARARY;
FILE *USER_IN_DARABASE;

char *PRINT_TITLE = "\n\tBOOK_ID\tBOOK_NAME  BOOK_AUTHOR_NAME   SELF_NO   ISSUE_STATUS\n";
char *PRINT_DASH = "\t-----------------------------------------------------------------\n";
char *READ_STRING_VALUE = "\t%s\t\t%s\t\t%s\t\t%s\t\t%s";
char *PRINT_STRING_VALUE = "\t%s\t%s\t\t%s\t\t%s\t\t%s\n";

#define READ_FROM_FILE_NAME_PASSWORD "%s\t\t%s\t\t%s\t\t%s\t\t%s"
#define PRINT_IN_FILE_NAME_PASSWORD "%s\t\t%s\t\t%s\t\t%s\t\t%s\n"

int IS_ADMIMN_OR_STUDENT = 0;
char User_Name[20],User_Password[16];

struct BOOK_INFO {

	char ID[10];
	char NAME[25];
	char AUTHOR_NAME[25];
	char PRICE[6];
	char ISSUE[5];
}BOOK[100];

struct USER_INFO {

	char USER_ID[10];
	char USER_NAME[20];
	char USER_PASSWORD[16];
	char USER_TYPE[2];
	char BOOK_BORROW_STATUS[10];
}USER[100];

#define VALUE_LIST_FOR_INPUT_OUTPUT BOOK[INDEX].ID,BOOK[INDEX].NAME,BOOK[INDEX].AUTHOR_NAME,\
									BOOK[INDEX].PRICE,BOOK[INDEX].ISSUE

#define FOR_LOOP_FOR_PRINT_VALUE_IN_FILE for(INDEX = 0; INDEX < RANGE ; INDEX++){\
						fprintf(BOOKS_IN_LIBARARY,PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);\
					}

#define VALUE_LIST_FOR_LOGIN_INFO USER[INDEX].USER_ID,USER[INDEX].USER_NAME,USER[INDEX].USER_PASSWORD,\
															USER[INDEX].USER_TYPE,USER[INDEX].BOOK_BORROW_STATUS

int COMMAND(int);
int USER_NAME_AND_PASSWORD_CHECK(int);
int ADMIN_COMMAND();
int STUDENT_COMMAND();
int ADD_BOOK();
int DELETE_BOOK();
int EDIT_BOOK();
int BORROW_BOOK();
int VIEW_BOOK();
int SEARCH_BOOK();
int RETURN_BOOK();
int CHANGE_USER_NAME();
int CHANGE_PASSWORD();
int CLEAR();
int HELP();
int MY_PROFILE();
int VIEW_PROFILE();
int FORGET_USER_NAME();
int FORGET_PASSWORD();
int ADD_USER();
int RESTART();
int LOG_OUT();

int main (){

	int START = 2;
	printf("\n\t\t\t   YOU HAVE 3 CHANCE TO LOGIN.\n\n");
	USER_NAME_AND_PASSWORD_CHECK(START);

	return 0;
}

int COMMAND(int IS_ADMIMN_OR_STUDENT ){

	if(IS_ADMIMN_OR_STUDENT){

	   ADMIN_COMMAND();
	}
	else{

		STUDENT_COMMAND();
	}

	return 0;
}

int USER_NAME_AND_PASSWORD_CHECK(int CHECK){

	FILE *USER_NAME_AND_PASSWORD_FILE;

	char CH[3];
	int Valid_Username = 0;
	int Valid_Password = 0;
	int INDEX = 0;

	printf("\nENTER USER NAME/ID: ");
	gets(User_Name);
	printf("\nENTER PASSWORD: ");
	gets(User_Password);

	USER_NAME_AND_PASSWORD_FILE = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"r");
	if(USER_NAME_AND_PASSWORD_FILE){
		INDEX = 0;
	while(fscanf(USER_NAME_AND_PASSWORD_FILE,"%s %s %s %s %s",VALUE_LIST_FOR_LOGIN_INFO) != EOF){

		if(strcmp(User_Name,USER[INDEX].USER_NAME) == 0 || strcmp(User_Name,USER[INDEX].USER_ID) == 0){

										Valid_Username = 1;

									if(strcmp(User_Password,USER[INDEX].USER_PASSWORD) == 0){

										if(strcmp(USER[INDEX].USER_TYPE,"A") == 0){

											IS_ADMIMN_OR_STUDENT = 1;
											printf("\n\t\t\t\tADMIN_ID: %s",USER[INDEX].USER_ID);
											printf("\n\n\t\t\tENTER \"HELP\" FOR OPERATING DETILS.\a\a");
											COMMAND(IS_ADMIMN_OR_STUDENT);
										}
										else if(strcmp(USER[INDEX].USER_TYPE,"S") == 0){

											IS_ADMIMN_OR_STUDENT = 0;
											printf("\n\t\t\t\tSTUDENT_ID: %s",USER[INDEX].USER_ID);
											printf("\n\n\t\t\tENTER HELP FOR OPERATING DETILS.\a\a");
											COMMAND(IS_ADMIMN_OR_STUDENT);
										}
										else {

											printf("\n\t\t\tTHE GIVEN INFORMATION IS WRONG.\a\a\n");
										}
									}
									else {

										printf("\n\t\t\tYOUR USER PASSWORD IS INCORRECT.\a\a\n");
										printf("\n\t\t\tDID YOU FORGET YOUR PASSWORD?(Y/N): ");
										gets(CH);
										strupr(CH);
										if(*CH == 'Y'){

											FORGET_PASSWORD();
										}
										else{

											if(CHECK > 0){

												printf("\n\t\t\t YOU HAVE %d MORE CHANCE TO LOGIN.\n\n\a\a",CHECK);
												USER_NAME_AND_PASSWORD_CHECK(CHECK - 1);
											}
											else{

												printf("\n\t\t\tYOU FINISHED YOUR CHANCE TO LOGIN.\n\n\t\t\tPLEASE TRY AGAIN 15sec LATER.\a\a\n\n");
												Sleep(15000);
												main();
											}
										}
									}
								}
								INDEX++;
		}
		fclose(USER_NAME_AND_PASSWORD_FILE);
		if(Valid_Username == 0){

			printf("\n\t\t\tYOUR USER NAME IS INCORRECT.\a\a\n");
			printf("\n\t\t\tDID YOU FORGET YOUR USER NAME?(Y/N)");
			gets(CH);
			strupr(CH);
			if(*CH == 'Y'){

				FORGET_USER_NAME();
			}
			else {

				if(CHECK > 0){

					printf("\n\t\t\t YOU HAVE %d MORE CHANCE TO LOGIN.\n\n\a\a",CHECK);
					USER_NAME_AND_PASSWORD_CHECK(CHECK - 1);
				}
				else{

					printf("\n\t\t\tYOU FINISHED YOUR CHANCE TO LOGIN.\n\n\t\t\tPLEASE TRY AGAIN IN 15sec LATER.\a\a\n\n");
					Sleep(15000);
					main();
				}
			}
		}
	}
	else{

		printf("\n\n\t\t\tFILE DOSN'T FOUND.\a\a\n");
	}
	return 0;
}

int ADD_BOOK(){

	int INDEX = 0,RANGE = 0;
	char Garbez;
	char READ_UNIQUE_ID[6],STORE_UNIQUE_ID[6];
	int UNIQUE_ID = 0;

	printf("\nHOW MANY BOOKS YOU WANT TO ADD: ");
	scanf("%d%c",&RANGE,&Garbez);

	for(INDEX = 0; INDEX < RANGE; INDEX++){

		char STRING_ID[15] = "A1-";
		BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_UNIQUE_ID,"r");

		if(BOOKS_IN_LIBARARY){

			fscanf(BOOKS_IN_LIBARARY,"%s",READ_UNIQUE_ID);
			UNIQUE_ID = atoi(READ_UNIQUE_ID);
			UNIQUE_ID+=1;
			itoa(UNIQUE_ID,STORE_UNIQUE_ID,10);
			strcat(STRING_ID,STORE_UNIQUE_ID);

			fclose(BOOKS_IN_LIBARARY);

			BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_UNIQUE_ID,"w");
			fprintf(BOOKS_IN_LIBARARY,"%d",UNIQUE_ID);
			fclose(BOOKS_IN_LIBARARY);
		}
		else{

			printf("\n\t\tFILE_ADDRESS_FOR_UNIQUE_ID DOSEN'T FOUND.\a\a");
			COMMAND(IS_ADMIMN_OR_STUDENT);
		}

		BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"a+");

		if(BOOKS_IN_LIBARARY){
			strcpy(BOOK[INDEX].ID,STRING_ID);
			printf("\nENTER BOOK NAME: ");
			gets(BOOK[INDEX].NAME);
			printf("ENTER AUTHOR NAME: ");
			gets(BOOK[INDEX].AUTHOR_NAME);
			printf("ENTER BOOK PRICE: ");
			gets(BOOK[INDEX].PRICE);
			strcpy(BOOK[INDEX].ISSUE,"NO");

			fprintf(BOOKS_IN_LIBARARY,PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);

			fclose(BOOKS_IN_LIBARARY);
			printf("\n\t\t\tA NEW BOOK ADDED SUCCESSFULLY\n");
		}
		else {

			printf("\n\t\tFILE_ADDRESS_FOR_BOOK_INFORMATION DOSEN'T FOUND.\a\a");
			COMMAND(IS_ADMIMN_OR_STUDENT);
		}
	}
	COMMAND(IS_ADMIMN_OR_STUDENT);

	return 0;
}

int DELETE_BOOK(){

	int INDEX = 0;
	int Check_Counter = 0,RANGE = 0;
	char INPUT_DELETE[20],CH[3];

	printf("\n\t\t\tWHICH BOOK YOU WANT TO DELETE?\nENTER BOOK ID: ");
	gets(INPUT_DELETE);
	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"r");

	if(BOOKS_IN_LIBARARY){

		while(fscanf(BOOKS_IN_LIBARARY,READ_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT) != EOF){

					if(strcmp(strupr(INPUT_DELETE),strupr(BOOK[INDEX].ID)) == 0){

						printf(PRINT_TITLE);
						printf(PRINT_DASH);
						printf(PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);
						printf("\n\t\t\tDO YOU WANT TO DELETE THIS BOOK?: \a\a");
						gets(CH);
						strupr(CH);
						printf("\n");
						if(*CH == 'Y'){
							printf("\n\t\t\tTHIS BOOK DELETE SUCCESSFULLY\n");
							INDEX--;
						}
						else{

							printf("\n\t\t\tYOU DON'T WANT TO DELETE THIS BOOK.\n");
						}
						Check_Counter++;
					}
					INDEX++;
					RANGE++;
		}
		if(Check_Counter == 0){

			printf("\n\n\t\t\tMAKE SURE YOU ENTER CORRECT BOOK ID.\a\a\n");
			DELETE_BOOK();
		}
		fclose(BOOKS_IN_LIBARARY);

		BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"w");
		for(INDEX = 0; INDEX < RANGE -1 ; INDEX++){

			fprintf(BOOKS_IN_LIBARARY,PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);
		}
		fclose(BOOKS_IN_LIBARARY);
	}
	else {

		printf("\n\t\tFILE_ADDRESS_FOR_BOOK_INFORMATION DOSEN'T FOUND.\a\a");
		COMMAND(IS_ADMIMN_OR_STUDENT);
	}

	COMMAND(IS_ADMIMN_OR_STUDENT);
	return 0;
}

int EDIT_BOOK(){

	char CH[3],CHOICE[25];
	char CHANGE_VALUE[25],REPLACE[25];
	int INDEX = 0,Check_Counter = 0,RANGE = 0;

	do {

		printf("\n\nENTER BOOK ID: ");
		gets(CHOICE);
		BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"r");

		INDEX = 0;
		while(fscanf(BOOKS_IN_LIBARARY,READ_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT) != EOF){
			if(strcmp(strupr(BOOK[INDEX].ID),strupr(CHOICE)) == 0){

				printf(PRINT_TITLE);
				printf(PRINT_DASH);
				printf(PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);
				printf("\n\tWHAT YOU WANT TO CHANGE: ");
				gets(CHANGE_VALUE);
				if(strcmp(strupr(CHANGE_VALUE),"BOOK_ID") == 0){

					printf("\n\t\t\tYOU CAN'T CHANGE BOOK ID.\a\a\n");
				}
				else if(strcmp(strupr(CHANGE_VALUE),"BOOK_NAME") == 0){

					printf("\nENTER NEW NAME: ");
					gets(REPLACE);
					strcpy(BOOK[INDEX].NAME,REPLACE);
				}
				else if(strcmp(strupr(CHANGE_VALUE),"BOOK_AUTHOR_NAME") == 0){

					printf("\nENTER NEW AUTHOR NAME: ");
					gets(REPLACE);
					strcpy(BOOK[INDEX].AUTHOR_NAME,REPLACE);
				}
				else if(strcmp(strupr(CHANGE_VALUE),"BOOK_PRICE") == 0){

					printf("\nENTER NEW PRICE: ");
					gets(REPLACE);
					strcpy(BOOK[INDEX].PRICE,REPLACE);
				}
				else if (strcmp(strupr(CHANGE_VALUE),"ISSUE_STATUS") == 0){

					printf("\n\t\t\tYOU CAN'T CHANGE BOOK ISSUE_STATUS.\a\a\n");
				}
				else {

					printf("\n\t\tMAKE SURE YOU TYPE CORRECT ONE.\a\a\n");
					EDIT_BOOK();
				}
				Check_Counter++;
			}
			INDEX++;
			RANGE++;
		}
		fclose(BOOKS_IN_LIBARARY);
		if(Check_Counter == 0){

			printf("\n\t\tMAKE SURE YOU TYPE CORRECT ID.\a\a\n");
			EDIT_BOOK();
		}
		BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"w");
		FOR_LOOP_FOR_PRINT_VALUE_IN_FILE
		fclose(BOOKS_IN_LIBARARY);
		printf("\n\t\tDO YOU WANT TO EDIT ANOTHER ONE?(Y\\N): ");
		gets(CH);
		printf("\n");
		strupr(CH);
	}while(*CH == 'Y');

	COMMAND(IS_ADMIMN_OR_STUDENT);
	return 0;
}

int BORROW_BOOK(){

	char CHOICE[20],CH[3];
	char USER_ID[20];
	char *TOOK;
	int INDEX = 0,INDEX1 = 0;
	int RANGE1 = 0,Check_Counter = 0,RANGE = 0;
	printf("\n\t\t\tWHICH BOOK YOU WANT TO BORROW?.\n\nENTER BOOK ID: ");
	gets(CHOICE);
	printf("\nENTER USER NAME: ");
	gets(User_Name);
	printf("\nENTER USER ID: ");
	gets(USER_ID);

	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"r");

	while(fscanf(BOOKS_IN_LIBARARY,READ_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT) != EOF){

		if((strcmp(strupr(BOOK[INDEX].ID),strupr(CHOICE)) == 0)){

			printf(PRINT_TITLE);
			printf(PRINT_DASH);
			printf(PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);
			if(strcmp(strupr(BOOK[INDEX].ISSUE),"YES") == 0){

					printf("\n\n\t\t\tTHS BOOK IS ALREADY ISSUED.\a\a\n");
					printf("\n\t\tDO YOU WANT TO BORROW ANOTHER BOOK?(Y\\N): ");
					gets(CH);
					strupr(CH);
					printf("\n");
					if(*CH == 'Y'){

				    	BORROW_BOOK();
					}
					else {

						COMMAND(IS_ADMIMN_OR_STUDENT);
					}
		   }
		   else{

				printf("\n\n\t\tDO YOU WANT TO BORROW THIS BOOK?(Y\\N): ");
				gets(CH);
				printf("\n");
				strupr(CH);
				if(*CH == 'Y'){

					if(strcmp(strupr(BOOK[INDEX].ISSUE),"NO") == 0){

						TOOK = BOOK[INDEX].NAME;

						USER_IN_DARABASE = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"r");
						INDEX1 = 0;
						RANGE1 = 0;
						while(fscanf(USER_IN_DARABASE,READ_FROM_FILE_NAME_PASSWORD,USER[INDEX1].USER_ID,
							USER[INDEX1].USER_NAME,USER[INDEX1].USER_PASSWORD,USER[INDEX1].USER_TYPE,
								USER[INDEX1].BOOK_BORROW_STATUS) != EOF){

								if((strcmp(User_Name,USER[INDEX1].USER_NAME) == 0) && (strcmp(USER_ID,USER[INDEX1].USER_ID) == 0)){

									if(strcmp(USER[INDEX1].BOOK_BORROW_STATUS,"NIL") == 0){

									strcpy(USER[INDEX1].BOOK_BORROW_STATUS,TOOK);
									}
									else {

										printf("\n\n\t\t\tYOU BORROWED ANOTHER BOOK.\n\n\t\t\tPLEASE FIRST RETURN BOOK.\a\a\n");
									}
								}
								INDEX1++;
								RANGE1++;
							}
							fclose(USER_IN_DARABASE);

							USER_IN_DARABASE = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"w");
							for(INDEX1 = 0; INDEX1 < RANGE1; INDEX1++){

								fprintf(USER_IN_DARABASE,PRINT_IN_FILE_NAME_PASSWORD,USER[INDEX1].USER_ID,
								USER[INDEX1].USER_NAME,USER[INDEX1].USER_PASSWORD,USER[INDEX1].USER_TYPE,
								USER[INDEX1].BOOK_BORROW_STATUS);
							}
							fclose(USER_IN_DARABASE);

							strcpy(BOOK[INDEX].ISSUE,"YES");
							printf(PRINT_TITLE);
							printf(PRINT_DASH);
							printf(PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);

							printf("\n\n\t\t\tTHIS BOOK IS SUCCESSFULLY ISSUED.\n");
						}
					}
					else {

						printf("\n\n\t\t\tYOU DON'T WANT TO ISSUE THIS BOOK.");
					}
				}
				Check_Counter = 1;
			 }
			 RANGE++;
			 INDEX++;
			 printf("%d    %d\n",RANGE,INDEX);
	}
	fclose(BOOKS_IN_LIBARARY);
	if(Check_Counter == 0) {

		 printf("\n\n\t\t\tMAKE SURE YOU ENTER CORRECT ID.\a\a\n\n");
		 BORROW_BOOK();
	}
	//fclose(BOOKS_IN_LIBARARY);

	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"w");
	FOR_LOOP_FOR_PRINT_VALUE_IN_FILE
	fclose(BOOKS_IN_LIBARARY);

	COMMAND(IS_ADMIMN_OR_STUDENT);
	return 0;
}

int VIEW_BOOK(){

	int INDEX = 0;

	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"r");
	if(BOOKS_IN_LIBARARY){
	printf("\n");
	printf(PRINT_TITLE);
	printf(PRINT_DASH);
	while(fscanf(BOOKS_IN_LIBARARY,READ_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT) != EOF){

		printf(PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);
		INDEX++;
	}
	fclose(BOOKS_IN_LIBARARY);
	COMMAND(IS_ADMIMN_OR_STUDENT);
	}
	else{

		printf("\n\t\t\tFILE_ADDRESS_FOR_BOOK_INFORMATION DOSEN'T FOUND.\a\a");
	}
	return 0;
}

int SEARCH_BOOK(){

	int INDEX = 0,L;
	int Check_Counter = 0;
	char INPUT_SEARCH[20],CH[2],D[2];
	printf("\n\n\t\t\tWHICH WAY YOU WANT TO SEARCH?\n");
	printf("\nPRESS 1 FOR SEARCH BY ID,\n\n\t PRESS 2 FOR SEARCH BY NAME: ");
	gets(D);
	printf("\n");
	L=atoi(D);
	switch (L){
	case 1:
		do{

		Check_Counter = 0;
		printf("\nENTER BOOK ID: ");
		gets(INPUT_SEARCH);

		BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"r");

			while(fscanf(BOOKS_IN_LIBARARY,READ_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT) != EOF){

						if(strcmp(strupr(INPUT_SEARCH),strupr(BOOK[INDEX].ID)) == 0){

							printf(PRINT_TITLE);
							printf(PRINT_DASH);
						printf(PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);
						Check_Counter = 1;
					}
						INDEX++;
			}
			if(Check_Counter == 0){
				printf("\n\t\t\tBOOK IS NOT FOUND.\a\a");
			}

			printf("\n\t\t\tDO YOU WANT TO SEARCH AGAIN?(Y\\N): ");
			gets(CH);
			printf("\n");
			strupr(CH);
	}while(*CH == 'Y');

	fclose(BOOKS_IN_LIBARARY);

	COMMAND(IS_ADMIMN_OR_STUDENT);
	case 2:
		do{

		Check_Counter = 0;
		printf("\nENTER BOOK NAME: ");
		gets(INPUT_SEARCH);

		BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"r");


			while(fscanf(BOOKS_IN_LIBARARY,READ_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT) != EOF){

					if(strcmp(strupr(INPUT_SEARCH),strupr(BOOK[INDEX].NAME)) == 0)	{

						printf(PRINT_TITLE);
						printf(PRINT_DASH);
						printf(PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);
						Check_Counter++;
					}
						INDEX++;
			}
			if(Check_Counter == 0){

				printf("\n\t\t\tBOOK IS NOT FOUND.\a\a");
			}

			printf("\n\t\t\tDO YOU WANT TO SEARCH AGAIN?(Y\\N): ");
			gets(CH);
			printf("\n");
			strupr(CH);
	}while(*CH == 'Y');

	fclose(BOOKS_IN_LIBARARY);

	COMMAND(IS_ADMIMN_OR_STUDENT);
	default:
		printf("\n\t\t\tPLEASE ENTER THE CORRECT ONE.\a\a\n");
		SEARCH_BOOK();
	}
	return 0;
}

int HELP_FOR_ADMIN(){

	printf("\n\t\t*ENTER ADD_BOOK FOR ADDING BOOK.*\n");
	printf("\n\t\t*ENTER DELETE_BOOK FOR DELETING BOOK.*\n");
	printf("\n\t\t*ENTER EDIT_BOOK FOR EIDITING BOOK.*\n");
	printf("\n\t\t*ENTER BORROW_BOOK FOR BORROW BOOK.*\n");
	printf("\n\t\t*ENTER VIEW_BOOK FOR VIEWING BOOK.*\n");
	printf("\n\t\t*ENTER SEARCH_BOOK FOR SEARCHING BOOK.*\n");
	printf("\n\t\t*ENTER RETURN_BOOK FOR RETURNING BOOK.*\n");
	printf("\n\t\t*ENTER LOG_OUT FOR LOGING OUT.*\n");
	printf("\n\t\t*ENTER CLEAR FOR CLEANING CONSOL.*\n");
	printf("\n\t\t*ENTER RESTART FOR RESTART THE SYSTEM.*\n");
	printf("\n\t\t*ENTER CHANGE_USER_NAME FOR CHANGING USER NAME.*\n");
	printf("\n\t\t*ENTER CHANGE_PASSWORD FOR CHANGING PASSWORD.*\n");
	printf("\n\t\t*ENTER ADD_USER FOR ADDING NEW USER.*\n");
	printf("\n\t\t*ENTER VIEW_PROFILE FOR VIEWING PROFILE .*\n");
	COMMAND(IS_ADMIMN_OR_STUDENT);
	return 0;
}

int HELP_FOR_STUDENT(){

	printf("\n\t\t*ENTER VIEW_BOOK FOR VIEWING BOOK.*\n");
	printf("\n\t\t*ENTER SEARCH_BOOK FOR SEARCHING BOOK.*\n");
	//printf("\n\t\t*ENTER RETURN_BOOK FOR RETURNING BOOK.*\n");
	printf("\n\t\t*ENTER LOG_OUT FOR LOGING OUT.*\n");
	printf("\n\t\t*ENTER CLEAR FOR CLEANING CONSOL.*\n");
	printf("\n\t\t*ENTER CHANGE_USER_NAME FOR CHANGING USER NAME.*\n");
	printf("\n\t\t*ENTER CHANGE_PASSWORD FOR CHANGING PASSWORD.*\n");
	printf("\n\t\t*ENTER MY_PROFILE FOR PROFILE INFORMATION.*\n");
	COMMAND(IS_ADMIMN_OR_STUDENT);

	return 0;
}

int RETURN_BOOK(){

	char CHOICE[20],USER_ID[20],TOOK_B[20];
	int INDEX = 0,INDEX1 = 0,RANGE1 = 0,Check_Counter = 0,RANGE = 0;

	printf("\n\n\t\t\tWHICH BOOK YOU WANT TO RETURN?\n\nENTER BOOK ID: ");
	gets(CHOICE);

	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"r");

		while(fscanf(BOOKS_IN_LIBARARY,READ_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT) != EOF){

					if(strcmp(strupr(BOOK[INDEX].ID),strupr(CHOICE)) == 0){

						if(strcmp(strupr(BOOK[INDEX].ISSUE),"YES") == 0){

							printf(PRINT_TITLE);
							printf(PRINT_DASH);
							printf(PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);
							strcpy(BOOK[INDEX].ISSUE,"NO");
							printf("\nENTER USER NAME: ");
							gets(User_Name);
							printf("\nENTER USER ID:");
							gets(USER_ID);
							printf("\nENTER RETURN BOOK NAME: ");
							gets(TOOK_B);
							USER_IN_DARABASE = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"r");
							while(fscanf(USER_IN_DARABASE,READ_FROM_FILE_NAME_PASSWORD,USER[INDEX1].USER_ID,
								USER[INDEX1].USER_NAME,USER[INDEX1].USER_PASSWORD,USER[INDEX1].USER_TYPE,USER[INDEX1].BOOK_BORROW_STATUS) != EOF){

								if((strcmp(User_Name,USER[INDEX1].USER_NAME)) == 0 && (strcmp(USER_ID,USER[INDEX1].USER_ID) == 0)){

									if(strcmp(USER[INDEX1].BOOK_BORROW_STATUS,TOOK_B) == 0){

									strcpy(USER[INDEX1].BOOK_BORROW_STATUS,"NIL");
									}
									/*else {

										printf("\n\n\t\t\tYOU BORROWED ANOTHER BOOK.\n\n\t\t\tPLEASE FIRST RETURN BOOK.\a\a\n");
									}*/
								}
								INDEX1++;
								RANGE1++;
							}

							fclose(USER_IN_DARABASE);
							USER_IN_DARABASE = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"w");

							for(INDEX1 = 0; INDEX1 < RANGE1; INDEX1++){

								fprintf(USER_IN_DARABASE,PRINT_IN_FILE_NAME_PASSWORD,USER[INDEX1].USER_ID,
								USER[INDEX1].USER_NAME,USER[INDEX1].USER_PASSWORD,USER[INDEX1].USER_TYPE,USER[INDEX1].BOOK_BORROW_STATUS);
							}
							fclose(USER_IN_DARABASE);
							printf("\n\t\t\tTHIS BOOK RECIVED SUCCESSFULLY.\n");
						}
						else{

							printf(PRINT_TITLE);
							printf(PRINT_DASH);
							printf(PRINT_STRING_VALUE,VALUE_LIST_FOR_INPUT_OUTPUT);
							printf("\n\t\t\t THIS BOOK ALREADY IN LIBARY.\a\a\n");
							printf("\n\t\t\tMAKE SURE YOU ENTER CORRECT ID.\a\a\n");

							RETURN_BOOK();
						}
						Check_Counter++;
					}
					RANGE++;
					INDEX++;
		}
		if(Check_Counter == 0){

			printf("\n\t\t\tMAKE SURE YOU ENTER CORRECT ID.\a\a\n");
			RETURN_BOOK();
		}
	fclose(BOOKS_IN_LIBARARY);

	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"w");
	FOR_LOOP_FOR_PRINT_VALUE_IN_FILE
	fclose(BOOKS_IN_LIBARARY);

	COMMAND(IS_ADMIMN_OR_STUDENT);
	return 0;
}

int LOG_OUT(){

	exit(1);
	return 0;
}

int CLEAR(){

	system("cls");
	COMMAND(IS_ADMIMN_OR_STUDENT);
	return 0;
}

int RESTART(){

	int START = 0;
	char CHOISE[2];

	printf("\n\t\tDO YOU WANT TO RESTART THE SYSTEM?(Y\\N): \a\a");
	gets(CHOISE);
	strupr(CHOISE);

	if(*CHOISE == 'Y'){

	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_UNIQUE_ID,"w");

	fprintf(BOOKS_IN_LIBARARY,"%d",START);

	fclose(BOOKS_IN_LIBARARY);

	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_BOOK_INFORMATION,"w");

	fclose(BOOKS_IN_LIBARARY);
	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_UNIQUE_ID_FOR_USER,"w");
	fprintf(BOOKS_IN_LIBARARY,"%d",START);
	fclose(BOOKS_IN_LIBARARY);
	printf("\n\t\t\tRESTART SUCCESSFUL.\a");
	COMMAND(IS_ADMIMN_OR_STUDENT);
	}
	else{

		COMMAND(IS_ADMIMN_OR_STUDENT);
	}

	return 0;
}

int CHANGE_USER_NAME(){

	char CH[3];
	char INPUT_NEW_USER_NAME[20];
	char INPUT_OLD_USER_NAME[20];
	int INDEX = 0,RANGE = 0,CHECK_COUNTER = 0;
	int IS_VALID_USER_NAME = 0;

	printf("\n\t\t\tDO YOU WANT TO CHANGE YOUR USER NAME(Y\\N): \a\a");
	gets(CH);
	strupr(CH);
	if(*CH == 'Y'){

		printf("\nENTER YOUR OLD USER NAME: ");
		gets(INPUT_OLD_USER_NAME);

		BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"r");

		while(fscanf(BOOKS_IN_LIBARARY,"%s %s %s %s %s",VALUE_LIST_FOR_LOGIN_INFO) != EOF){

				if(strcmp(INPUT_OLD_USER_NAME,USER[INDEX].USER_NAME) == 0){

					IS_VALID_USER_NAME = 1;
					printf("\nENTER NEW USER NAME: ");
					gets(INPUT_NEW_USER_NAME);
					if(strcmp(INPUT_NEW_USER_NAME,USER[INDEX].USER_PASSWORD) == 0){

						printf("\n\n\t\t\tYOU CAN'T USE YOUR PASSWORD AS A USER NAME.\a\a\n");
						CHANGE_USER_NAME();
					}
					else {

						strcpy(USER[INDEX].USER_NAME,INPUT_NEW_USER_NAME);
					}
				}
				INDEX++;
				RANGE++;
		}
		fclose(BOOKS_IN_LIBARARY);
		if(IS_VALID_USER_NAME == 0){

			printf("\n\t\tYOUR OLD USER NAME IS INCORRECT.\a\a\n");
			CHANGE_USER_NAME();
		}

		BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"w");
		for(INDEX = 0; INDEX < RANGE; INDEX++){

			fprintf(BOOKS_IN_LIBARARY,"%s \t%s  \t%s  \t%s   \t%s\n",VALUE_LIST_FOR_LOGIN_INFO);
		}
		fclose(BOOKS_IN_LIBARARY);
		COMMAND(IS_ADMIMN_OR_STUDENT);
	}
	else {

		printf("\n\n\t\t\tYOU DON'T WANT TO CHANGE YOUR USER NAME.\a\a");
		COMMAND(IS_ADMIMN_OR_STUDENT);
	}

	return 0;
}

int CHANGE_PASSWORD(){

	char CH[3];
	char INPUT_NEW_PASSWORD[16];
	char INPUT_OLD_PASSWORD[16];
	int INDEX = 0,RANGE = 0;
	int IS_VALID_PASSWORD = 0;

	printf("\n\t\t\tDO YOU WANT TO CHANGE YOUR PASSWORD(Y\\N): \a\a");
	gets(CH);
	strupr(CH);
	if(*CH == 'Y'){

		printf("\nENTER YOUR OLD PASSWORD: ");
		gets(INPUT_OLD_PASSWORD);

		BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"r");

		while(fscanf(BOOKS_IN_LIBARARY,"%s %s %s %s %s",VALUE_LIST_FOR_LOGIN_INFO) != EOF){

				if(strcmp(INPUT_OLD_PASSWORD,USER[INDEX].USER_PASSWORD) == 0){

					IS_VALID_PASSWORD = 1;
					printf("\nENTER NEW PASSWORD: ");
					gets(INPUT_NEW_PASSWORD);
					if(strcmp(INPUT_NEW_PASSWORD,USER[INDEX].USER_NAME) == 0){

						printf("\n\n\t\t\tYOU CAN'T USE YOUR USER NAME AS A PASSWORD.\a\a\n");
						CHANGE_PASSWORD();
					}
					else {

						strcpy(USER[INDEX].USER_PASSWORD,INPUT_NEW_PASSWORD);
					}
				}
				INDEX++;
				RANGE++;
		}
		fclose(BOOKS_IN_LIBARARY);
		if(IS_VALID_PASSWORD == 0){

			printf("\n\t\tYOUR OLD PASSWORD IS INCORRECT.\a\a\n");
			CHANGE_PASSWORD();
		}

		BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"w");
		for(INDEX = 0; INDEX < RANGE; INDEX++){

			fprintf(BOOKS_IN_LIBARARY,"%s \t%s  \t%s  \t%s\t\t%s\n",VALUE_LIST_FOR_LOGIN_INFO);
		}
		fclose(BOOKS_IN_LIBARARY);
		COMMAND(IS_ADMIMN_OR_STUDENT);
	}
	else {

		printf("\n\n\t\t\tYOU DON'T WANT TO CHANGE YOUR USER NAME.\a\a");
		COMMAND(IS_ADMIMN_OR_STUDENT);
	}

	return 0;
}

int ADMIN_COMMAND(){

	char INPUT_COMMAND[25];

	printf("\n\n\nCOMMAND: ");
	gets(INPUT_COMMAND);

	if(strcmp(strupr(INPUT_COMMAND),"ADD_BOOK") == 0){

		ADD_BOOK();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"DELETE_BOOK") == 0){

		DELETE_BOOK();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"EDIT_BOOK") == 0){

		EDIT_BOOK();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"BORROW_BOOK") == 0){

		BORROW_BOOK();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"VIEW_BOOK") == 0){

		VIEW_BOOK();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"SEARCH_BOOK") == 0){

		SEARCH_BOOK();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"LOG_OUT") == 0){

		LOG_OUT();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"RETURN_BOOK") == 0){

		RETURN_BOOK();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"HELP") == 0){

		HELP_FOR_ADMIN();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"CLEAR") == 0){

		CLEAR();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"RESTART") == 0){

		RESTART();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"CHANGE_USER_NAME") == 0){

		CHANGE_USER_NAME();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"CHANGE_PASSWORD") == 0){

		CHANGE_PASSWORD();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"VIEW_PROFILE") == 0){

		VIEW_PROFILE();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"ADD_USER") == 0){

		ADD_USER();
	}
	else {

		printf("\n\t\t\tMAKE SURE YOU WRITE THE CORRECT ONE.\n\a\a");
		COMMAND(IS_ADMIMN_OR_STUDENT);
	}

	return 0;
}

int STUDENT_COMMAND(){

	char INPUT_COMMAND[25];

	printf("\n\n\nCOMMAND: ");
	gets(INPUT_COMMAND);

    if(strcmp(strupr(INPUT_COMMAND),"VIEW_BOOK") == 0){

		VIEW_BOOK();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"SEARCH_BOOK") == 0){

		SEARCH_BOOK();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"LOG_OUT") == 0){

		LOG_OUT();
	}
	/*else if(strcmp(strupr(INPUT_COMMAND),"RETURN_BOOK") == 0){

		RETURN_BOOK();
	}*/
	else if(strcmp(strupr(INPUT_COMMAND),"HELP") == 0){

		HELP_FOR_STUDENT();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"CLEAR") == 0){

		CLEAR();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"CHANGE_USER_NAME") == 0){

		CHANGE_USER_NAME();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"CHANGE_PASSWORD") == 0){

		CHANGE_PASSWORD();
	}
	else if(strcmp(strupr(INPUT_COMMAND),"MY_PROFILE") == 0){

		MY_PROFILE();
	}
	else {

		printf("\n\t\t\tMAKE SURE YOU WRITE THE CORRECT ONE.\n\a\a");
		COMMAND(IS_ADMIMN_OR_STUDENT);
	}

	return 0;
}

int MY_PROFILE(){

	int INDEX = 0;
	char CH[2];

	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"r");
	printf("\n\tUSER_ID\t USER_NAME\tUSER_PASSWORD\tUSER_TYPE\tBORROW_STATUS\n");
	printf(PRINT_DASH);
	while(fscanf(BOOKS_IN_LIBARARY,READ_FROM_FILE_NAME_PASSWORD,VALUE_LIST_FOR_LOGIN_INFO) != EOF){

		if(strcmp(User_Name,USER[INDEX].USER_NAME) == 0 && strcmp(User_Password,USER[INDEX].USER_PASSWORD) == 0){

			printf("\t%s\t %s\t\t%s\t\t%s\t\t%s\n",VALUE_LIST_FOR_LOGIN_INFO);
		}
		INDEX++;
	}

	fclose(BOOKS_IN_LIBARARY);
	printf("\n\t\t\tDO YOU WANT TO VIEW AGAIN(Y/N) ");
	gets(CH);
	strupr(CH);
	if(*CH == 'Y'){

		MY_PROFILE();
	}
	else {

		COMMAND(IS_ADMIMN_OR_STUDENT);
	}
	return 0;
}

int VIEW_PROFILE(){

	char GARBEZ,CH[2];
	int INDEX = 0,VIEW_TYPE;

		printf("\nWHAT YOU WANT TO VIEW:\n\t\t\t PRESS 1\"FOR ALL STUDENT PROFILE\"\n\
			PRESS 2\"FOR ALL ADMIN PROFILE\"\n\
			   PRESS 3\"FOR MY PROFILE\"");
		scanf("%d%c",&VIEW_TYPE,&GARBEZ);

		if(VIEW_TYPE == 1){

			BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"r");

			printf("\n\tUSER_ID\t  USER_NAME\tUSER_PASSWORD\tUSER_TYPE\tBORROW_STATUS\n");
			printf(PRINT_DASH);
			INDEX = 0;
			while(fscanf(BOOKS_IN_LIBARARY,READ_FROM_FILE_NAME_PASSWORD,VALUE_LIST_FOR_LOGIN_INFO) != EOF){

				if(strcmp(strupr(USER[INDEX].USER_TYPE),"S") == 0){

						printf("\t%s \t%s\t\t%s\t\t%s\t\t%s\n",VALUE_LIST_FOR_LOGIN_INFO);
				}
				INDEX++;
			}
			fclose(BOOKS_IN_LIBARARY);
			printf("\n\t\t\tDO YOU WANT TO VIEW AGAIN(Y\\N) ");
			gets(CH);
			strupr(CH);
			if(*CH == 'Y'){

				VIEW_PROFILE();
			}
			else{

				COMMAND(IS_ADMIMN_OR_STUDENT);
			}

		}
		else if(VIEW_TYPE == 2){


			BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"r");

			printf("\n\tUSER_ID\t  USER_NAME\tUSER_PASSWORD\tUSER_TYPE\n");
			printf(PRINT_DASH);
			INDEX = 0;
			while(fscanf(BOOKS_IN_LIBARARY,READ_FROM_FILE_NAME_PASSWORD,VALUE_LIST_FOR_LOGIN_INFO) != EOF){

				if(strcmp(strupr(USER[INDEX].USER_TYPE),"A") == 0){

						printf("\t%s \t%s\t\t%s\t\t%s\n",VALUE_LIST_FOR_LOGIN_INFO);
				}
				INDEX++;
			}
			fclose(BOOKS_IN_LIBARARY);
			printf("\n\t\t\tDO YOU WANT TO VIEW AGAIN(Y/N) ");
			gets(CH);
			strupr(CH);
			if(*CH == 'Y'){

				VIEW_PROFILE();
			}
			else{

				COMMAND(IS_ADMIMN_OR_STUDENT);
			}
		}
		else if(VIEW_TYPE == 3){

			BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"r");
			printf("\n\tUSER_ID\t  USER_NAME\tUSER_PASSWORD\tUSER_TYPE\n");
			printf(PRINT_DASH);
			INDEX = 0;
			while(fscanf(BOOKS_IN_LIBARARY,READ_FROM_FILE_NAME_PASSWORD,VALUE_LIST_FOR_LOGIN_INFO) != EOF){

				if(strcmp(User_Name,USER[INDEX].USER_NAME) == 0 && strcmp(User_Password,USER[INDEX].USER_PASSWORD) == 0){

					printf("\t*%s \t%s\t\t%s\t\t\t%s\n",VALUE_LIST_FOR_LOGIN_INFO);
				}
				INDEX++;
			}

			fclose(BOOKS_IN_LIBARARY);
			printf("\n\t\t\tDO YOU WANT TO VIEW AGAIN(Y/N) ");
			gets(CH);
			strupr(CH);
			if(*CH == 'Y'){

				VIEW_PROFILE();
			}
			else {

				COMMAND(IS_ADMIMN_OR_STUDENT);
			}
		}
		else {

			printf("\n\n\t\t\tYOU ENTER THE WRONG CHOICE.\a\a\n");
			VIEW_PROFILE();
		}

	return 0;
}

int FORGET_USER_NAME(){

	char USER_TYPE[3],USER_ID[20];
	char INPUT_NEW_USER_NAME[20];
	int INDEX = 0,IS_VALID_USER_NAME = 0,RANGE = 0;

	printf("\nENTER YOUR ID: ");
	gets(USER_ID);
	printf("\nENTER YOUR USER TYPE: ");
	gets(USER_TYPE);
	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"r");

	while(fscanf(BOOKS_IN_LIBARARY,READ_FROM_FILE_NAME_PASSWORD,VALUE_LIST_FOR_LOGIN_INFO) != EOF){

		if(strcmp(USER_ID,USER[INDEX].USER_ID) == 0 && strcmp(USER_TYPE,USER[INDEX].USER_TYPE) == 0){

					IS_VALID_USER_NAME = 1;
					printf("\nENTER NEW USER NAME: ");
					gets(INPUT_NEW_USER_NAME);
					if(strcmp(INPUT_NEW_USER_NAME,USER[INDEX].USER_PASSWORD) == 0){

						printf("\n\n\t\t\tYOU CAN'T USE YOUR USER NAME AS A PASSWORD.\a\a\n");
						FORGET_USER_NAME();
					}
					else {

						strcpy(USER[INDEX].USER_NAME,INPUT_NEW_USER_NAME);
					}
				}
		INDEX++;
		RANGE++;
	}
	if(IS_VALID_USER_NAME == 0){

		printf("\n\t\t\tYOU ENTERED THE WRONG ID.\a\a\n");
		FORGET_USER_NAME();
	}
	fclose(BOOKS_IN_LIBARARY);

	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"w");
	for(INDEX = 0; INDEX < RANGE;INDEX++){

		fprintf(BOOKS_IN_LIBARARY,PRINT_IN_FILE_NAME_PASSWORD,VALUE_LIST_FOR_LOGIN_INFO);
	}
	fclose(BOOKS_IN_LIBARARY);
	main();
	return 0;
}

int FORGET_PASSWORD(){

	char USER_TYPE[3],USER_ID[20];
	char INPUT_NEW_PASSWORD[20];
	int INDEX = 0,IS_VALID_PASSWORD = 0,RANGE = 0;

	printf("\nENTER YOUR ID: ");
	gets(USER_ID);
	printf("\nENTER YOUR USER TYPE: ");
	gets(USER_TYPE);
	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"r");

	while(fscanf(BOOKS_IN_LIBARARY,READ_FROM_FILE_NAME_PASSWORD,VALUE_LIST_FOR_LOGIN_INFO) != EOF){

		if(strcmp(USER_ID,USER[INDEX].USER_ID) == 0 && strcmp(USER_TYPE,USER[INDEX].USER_TYPE) == 0){

					IS_VALID_PASSWORD = 1;
					printf("\nENTER NEW PASSWORD: ");
					gets(INPUT_NEW_PASSWORD);
					if(strcmp(INPUT_NEW_PASSWORD,USER[INDEX].USER_NAME) == 0){

						printf("\n\n\t\t\tYOU CAN'T USE YOUR PASSWORD AS A USER NAME.\a\a\n");
						FORGET_PASSWORD();
					}
					else {

						strcpy(USER[INDEX].USER_PASSWORD,INPUT_NEW_PASSWORD);
					}
				}
		INDEX++;
		RANGE++;
	}
	if(IS_VALID_PASSWORD == 0){

		printf("\n\t\t\tYOU ENTERED THE WRONG ID.\a\a\n");
		FORGET_PASSWORD();
	}
	fclose(BOOKS_IN_LIBARARY);

	BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"w");
	for(INDEX = 0; INDEX < RANGE;INDEX++){

		fprintf(BOOKS_IN_LIBARARY,PRINT_IN_FILE_NAME_PASSWORD,VALUE_LIST_FOR_LOGIN_INFO);
	}
	fclose(BOOKS_IN_LIBARARY);
	main();
	return 0;
}

int ADD_USER(){

	int INDEX = 0,RANGE = 0;
	char READ_UNIQE_ID[20],STORE_UNIQE_ID[20],GARVEZ_STRING[10];
	char STORE_PASSWORD[5],CH[2],GARVEZ,STRING[35];
	int USER_RAND_PASSWORD;
	int UNIQE_ID;

	do
	{
		printf("\n\t\t\tHOW MANY USER YOU WANT TO ADD: ");
		scanf("%d%c",&RANGE,&GARVEZ);


		for(INDEX = 0; INDEX < RANGE; INDEX++){

			strcpy(STRING,"U-");
			srand(time(0));
			BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_UNIQUE_ID_FOR_USER,"r");
			fscanf(BOOKS_IN_LIBARARY,"%s",READ_UNIQE_ID);
			UNIQE_ID = atoi(READ_UNIQE_ID);
			UNIQE_ID +=1;
			itoa(UNIQE_ID,STORE_UNIQE_ID,10);
			strcat(STRING,STORE_UNIQE_ID);
			fclose(BOOKS_IN_LIBARARY);

			BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_UNIQUE_ID_FOR_USER,"w");
			fprintf(BOOKS_IN_LIBARARY,"%s",STORE_UNIQE_ID);
			fclose(BOOKS_IN_LIBARARY);

			strcpy(USER[INDEX].USER_ID,STRING);
			*STORE_UNIQE_ID = NULL;
			printf("\nENTER USER NAME: ");
			gets(USER[INDEX].USER_NAME);
			printf("\nENTER USER TYPE: ");
			gets(USER[INDEX].USER_TYPE);
			USER_RAND_PASSWORD = (rand()%60)+500;
			itoa(USER_RAND_PASSWORD,STORE_PASSWORD,10);
			strcpy(USER[INDEX].USER_PASSWORD,STORE_PASSWORD);
			if(strcmp(strupr(USER[INDEX].USER_TYPE),"A") == 0){

				strcpy(USER[INDEX].BOOK_BORROW_STATUS,"RST");
			}
			else if(strcmp(strupr(USER[INDEX].USER_TYPE),"S") == 0){

				strcpy(USER[INDEX].BOOK_BORROW_STATUS,"NIL");
			}
			else{

				printf("\n\t\t\tYOU ENTER WRONG USER TYPE.\a\a\n");
				ADD_USER();
			}
			BOOKS_IN_LIBARARY = fopen(FILE_ADDRESS_FOR_USERNAME_PASSWORD_AND_INFO,"a+");
			fprintf(BOOKS_IN_LIBARARY,PRINT_IN_FILE_NAME_PASSWORD,VALUE_LIST_FOR_LOGIN_INFO);
			printf("\n\n\t\t\tA NEW USER IS SUCCESSFULLY ADDED.\n");
			printf("\n\n\t\tNEW USER ID IS: %s\n\t\tNEW USER PASSWORD IS: %s\n",USER[INDEX].USER_ID,USER[INDEX].USER_PASSWORD);

			fclose(BOOKS_IN_LIBARARY);
		}
		fclose(BOOKS_IN_LIBARARY);
		printf("\n\t\t\tDO YOU WANT TO ADD AGAIN?(Y/N)");
		gets(CH);
		strupr(CH);
	}while(*CH == 'Y');
	COMMAND(IS_ADMIMN_OR_STUDENT);
	return 0;
}