Uploading Codes & Notes

Author: MrHAM17

Notes/Chapter. 10/10_01_file_basics.c

@@ -0,0 +1,8 @@
+#include<stdio.h>
+
+int main(){
+    FILE *ptr;
+    // ptr = fopen("sample2.txt", "r"); //--> for reading the file
+    //ptr = fopen("sample2.txt", "w"); //--> for writing to a file
+    return 0;
+}

Notes/Chapter. 10/10_02_file_reading.c

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+#include<stdio.h>
+
+int main(){
+    FILE *ptr;
+    int num;
+    int num2;
+    ptr = fopen("Harry.txt", "r");
+    fscanf(ptr, "%d", &num);
+    fscanf(ptr, "%d", &num2);
+    fclose(ptr);
+    printf("The value of num is %d\n", num);
+    printf("The value of num2 is %d\n", num2);
+    return 0;
+}

Notes/Chapter. 10/10_03_quick_quiz.c

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+#include<stdio.h>
+
+int main(){
+    FILE *ptr;
+    int num;
+    int num2;
+    ptr = fopen("Harr3y.txt", "r");
+    if (ptr == NULL){
+        printf("This file does not exist\n");
+    }
+    else{ 
+        fscanf(ptr, "%d", &num);
+        fscanf(ptr, "%d", &num2);
+        fclose(ptr);
+        printf("The value of num is %d\n", num);
+        printf("The value of num2 is %d\n", num2);
+    }
+    return 0;
+}

Notes/Chapter. 10/10_04_file_writing.c

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+#include<stdio.h>
+
+int main(){
+    FILE *fptr;
+    int number = 45;
+    fptr = fopen("generated.txt", "w");
+    fprintf(fptr, "The number is %d\n", number);
+    fprintf(fptr, "Thanks for using fprintf", number);
+    fclose(fptr);
+
+    return 0;
+}

Notes/Chapter. 10/10_05_fgetc_fputc.c

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+#include<stdio.h>
+
+int main(){
+    FILE *ptr;
+    // fgetc demo for reading a file
+    // ptr = fopen("getcdemo.txt", "r");
+    // char c = fgetc(ptr);
+    // printf("The value of my character is %c\n", fgetc(ptr));
+    // printf("The value of my character is %c\n", fgetc(ptr));
+    // printf("The value of my character is %c\n", fgetc(ptr));
+    // printf("The value of my character is %c\n", fgetc(ptr));
+    // printf("The value of my character is %c\n", fgetc(ptr));
+
+    ptr = fopen("putcdemo.txt", "w");
+    putc('c', ptr);
+    putc('c', ptr);
+    putc('c', ptr);
+    fclose(ptr);
+    return 0;
+}

Notes/Chapter. 10/10_06_file_read_fgetc.c

@@ -0,0 +1,13 @@
+#include<stdio.h>
+
+int main(){
+    FILE *ptr;
+    char c;
+    ptr = fopen("getcdemo.txt", "r");
+    c = fgetc(ptr);
+    while(c!=EOF){
+        printf("%c", c);
+        c = fgetc(ptr);
+    }
+    return 0;
+}

Notes/Chapter. 10/10_07_pr_01.c

@@ -0,0 +1,11 @@
+#include<stdio.h>
+
+int main(){
+    int a, b, c;
+    FILE *ptr;
+    ptr = fopen("pr01.txt", "r");
+    fscanf(ptr, "%d %d %d", &a, &b, &c);
+    printf("The values of a b and c is %d %d %d\n", a, b, c);
+
+    return 0;
+}

Notes/Chapter. 10/10_08_pr_02.c

@@ -0,0 +1,15 @@
+#include<stdio.h>
+
+int main(){
+    FILE *ptr;
+    int num;
+    printf("Enter the integer you need the table of\n");
+    scanf("%d", &num);
+    ptr = fopen("table.txt", "w");
+    for(int i=0; i<10; i++){
+        fprintf(ptr, "%d X %d = %d\n", num, i+1, num*(i+1));
+    }
+    fclose(ptr);
+    printf("Successfully generated table of %d to table.txt\n", num);
+    return 0;
+}

Notes/Chapter. 10/10_09_pr_03.c

@@ -0,0 +1,18 @@
+#include<stdio.h>
+
+int main(){
+    FILE *ptr1;
+    FILE *ptr2; 
+    ptr1 = fopen("a.txt", "r");
+    ptr2 = fopen("b.txt", "w");
+
+    char c = fgetc(ptr1);
+    while(c!=EOF){
+        fputc(c, ptr2);
+        fputc(c, ptr2);
+        c = fgetc(ptr1);
+    }
+    fclose(ptr1); 
+    fclose(ptr2); 
+    return 0;
+}

Notes/Chapter. 10/Chapter 10 - Practice.pdf

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+34 88

Notes/Chapter. 10/Chapter 10.pdf

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+for problem number 3

Notes/Chapter. 10/Harry.txt

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+ffoorr  pprroobblleemm  nnuummbbeerr  33

Notes/Chapter. 10/a.txt

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+The number is 45
+Thanks for using fprintf

Notes/Chapter. 10/b.txt

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+this is my getc demo file

Notes/Chapter. 10/generated.txt

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+23 54 67

Notes/Chapter. 10/getcdemo.txt

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+ccc

Notes/Chapter. 10/pr01.txt

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+sdfsdf

Notes/Chapter. 10/putcdemo.txt

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+34 X 1 = 34
+34 X 2 = 68
+34 X 3 = 102
+34 X 4 = 136
+34 X 5 = 170
+34 X 6 = 204
+34 X 7 = 238
+34 X 8 = 272
+34 X 9 = 306
+34 X 10 = 340

Notes/Chapter. 10/sample.txt

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+#include<stdio.h> 
+#include<stdlib.h> 
+
+int main(){
+    int *ptr;
+    // Sizeof operator in C
+    // printf("The size of int on my pc is %d\n", sizeof(int));
+    // printf("The size of float on my pc is %d\n", sizeof(float));
+    // printf("The size of char on my pc is %d\n", sizeof(char));
+    ptr = (int *) malloc(6 * sizeof(int)); 
+    for(int i=0; i<6;i++){
+        printf("Enter the value of %d element: \n", i); 
+        scanf("%d", &ptr[i]);
+    }
+
+    for(int i=0; i<6;i++){
+        printf("The value of %d element is: %d\n", i, ptr[i]); 
+    }
+    return 0;
+}

Notes/Chapter. 10/sample2.txt

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+#include<stdio.h> 
+#include<stdlib.h> 
+
+int main(){
+    int *ptr; 
+    ptr = (int *) calloc(6, sizeof(int)); 
+    // for(int i=0; i<6;i++){
+    //     printf("Enter the value of %d element: \n", i); 
+    //     scanf("%d", &ptr[i]);
+    // }
+
+    for(int i=0; i<6;i++){
+        printf("The value of %d element is: %d\n", i, ptr[i]); 
+    }
+    return 0;
+}

Notes/Chapter. 10/table.txt

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+#include<stdio.h> 
+#include<stdlib.h> 
+
+int main(){
+    int *ptr; 
+    int n;
+    printf("How many integers do you want to enter:\n");
+    scanf("%d", &n);
+    ptr = (int *) calloc(n, sizeof(int)); 
+    for(int i=0; i<n;i++){
+        printf("Enter the value of %d element: \n", i); 
+        scanf("%d", &ptr[i]);
+    }
+
+    for(int i=0; i<n;i++){
+        printf("The value of %d element is: %d\n", i, ptr[i]); 
+    }
+    return 0;
+}

Notes/Chapter. 11/11_01_malloc.c

@@ -0,0 +1,23 @@
+#include<stdio.h> 
+#include<stdlib.h> 
+
+int main(){
+    int *ptr;
+    int *ptr2;
+    // Sizeof operator in C
+    // printf("The size of int on my pc is %d\n", sizeof(int));
+    // printf("The size of float on my pc is %d\n", sizeof(float));
+    // printf("The size of char on my pc is %d\n", sizeof(char));
+    ptr = (int *) malloc(600 * sizeof(int)); 
+    for(int i=0; i<600;i++){
+        ptr2 = (int *) malloc(600000 * sizeof(int)); 
+        printf("Enter the value of %d element: \n", i); 
+        scanf("%d", &ptr[i]);
+        free(ptr2);
+    }
+
+    for(int i=0; i<6;i++){
+        printf("The value of %d element is: %d\n", i, ptr[i]); 
+    }
+    return 0;
+}

Notes/Chapter. 11/11_02_calloc.c

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+#include<stdio.h> 
+#include<stdlib.h> 
+
+int main(){
+    int *ptr; 
+    ptr = (int *) malloc(6 * sizeof(int)); 
+    for(int i=0; i<6;i++){
+        printf("Enter the value of %d element: \n", i); 
+        scanf("%d", &ptr[i]);
+    }
+
+    for(int i=0; i<6;i++){
+        printf("The value of %d element is: %d\n", i, ptr[i]); 
+    }
+
+    // Reallocate ptr using realloc()
+    ptr = realloc(ptr, 10*sizeof(int));
+    
+    for(int i=0; i<10;i++){
+        printf("Enter the value of %d element: \n", i); 
+        scanf("%d", &ptr[i]);
+    }
+
+    for(int i=0; i<10;i++){
+        printf("The value of %d element is: %d\n", i, ptr[i]); 
+    }
+
+
+    return 0;
+}

Notes/Chapter. 11/11_03_calloc_quick_quiz.c

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+#include<stdio.h>
+#include<stdlib.h>
+
+int main(){
+    int *ptr;
+    ptr = (int*) malloc(5*sizeof(int));
+    for(int i=0; i<5;i++){
+        printf("Enter the value of %d element: \n", i);
+        scanf("%d", &ptr[i]);
+    }
+
+    for(int i=0; i<5;i++){
+        printf("The value of %d element is: %d \n", i, ptr[i]); 
+    }
+
+    ptr = realloc(ptr, 10*sizeof(int));
+    for(int i=0; i<10;i++){
+        printf("Enter the value of %d element: \n", i);
+        scanf("%d", &ptr[i]);
+    }
+
+    for(int i=0; i<10;i++){
+        printf("The value of %d element is: %d \n", i, ptr[i]); 
+    }
+    return 0;
+}

Notes/Chapter. 11/11_04_free_demo.c

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+#include<stdio.h>
+#include<stdlib.h>
+
+int main(){
+    int *ptr;
+    ptr = (int*) malloc(10*sizeof(int));
+    for(int i=0; i<10;i++){
+        ptr[i] = 7*(i+1);  
+        printf("The value of 7 X %d = %d \n", i+1,ptr[i]); 
+    }
+ 
+    ptr = realloc(ptr, 15*sizeof(int));
+    printf("\nAfter reallocating.....\n\n");
+    for(int i=0; i<15;i++){
+        ptr[i] = 7*(i+1);  
+        printf("The value of 7 X %d = %d \n", i+1,ptr[i]); 
+    }
+    
+    return 0;
+}