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Author: abdullah-ergul

B.Sc._1_2_EmrahOzkaynak/Final_Exam/1-Question.c

@@ -0,0 +1,71 @@
+// 25 point
+
+#include <stdio.h>
+#include <stdlib.h>
+
+struct numbers{
+    int number; struct numbers *next;
+};
+typedef struct numbers numbers;
+
+
+numbers *delRec(numbers *head){
+    numbers *p= head;
+    numbers *q= p->next;
+    int i, j;
+
+    for(i=0; p->next != NULL; i++){
+        p= p->next;
+    }
+
+    p= head;
+    for(j=1; j < i/2; j++){
+        p= p->next;
+        q= q->next;
+    }
+
+    p->next = q->next;
+    free(q);
+
+    return head;
+}
+
+int main(){
+    numbers *head= (numbers *)calloc(1,sizeof(numbers)), *p;
+    int number, n=1, i;
+
+    printf("Enter %d'th Number: ",n); scanf("%d",&number);
+    while(number != -1){
+        if(n == 1){
+            head->number = number;
+            head->next = (numbers *)calloc(1,sizeof(numbers));
+            p= head;
+            p= p->next;
+        }
+        else{
+            p->number= number;
+            p->next = (numbers *)calloc(1,sizeof(numbers));
+            p= p->next;
+        }
+        n++;
+        printf("Enter %d'th Number: ",n); scanf("%d",&number);
+    }
+    p= NULL;
+
+    p= head;
+    for(i=0; i<n; i++){
+        printf("%d ", p->number);
+        p= p->next;
+    }
+
+    printf("\n");
+    head= delRec(head);
+
+    p= head;
+    for(i=0; i<n-1; i++){
+        printf("%d ", p->number);
+        p= p->next;
+    }
+
+    return 0;
+}

B.Sc._1_2_EmrahOzkaynak/Final_Exam/2-Question.c

@@ -0,0 +1,82 @@
+// 35 point
+
+#include<stdlib.h>
+#include<stdio.h>
+
+struct Student{
+	int id;
+	float grade;
+	char name[41];
+};
+typedef struct Student Student;
+
+void update(FILE* file){
+	int counter = 0;
+
+	while (!feof(file) && counter++ <= 100) {
+
+		Student tempStudent = { 0,0,"" };
+		fseek(file,sizeof(Student) * (counter-1),SEEK_SET);
+
+		fread(&tempStudent, sizeof(Student), 1, file);
+
+		tempStudent.grade += 10;
+
+		fwrite(&tempStudent, sizeof(Student), 1, file);
+	}
+}
+
+void bestStudent(FILE* file){
+	int counter = 0;
+
+	Student maxStudent = { 0,0,"" };
+
+	while (!feof(file) && counter++ <= 100) {
+
+		Student tempStudent = { 0,0,"" };
+		fseek(file, sizeof(Student) * (counter - 1), SEEK_SET);
+
+		fread(&tempStudent, sizeof(Student), 1, file);
+
+		if (maxStudent.grade > tempStudent.grade)
+			maxStudent = tempStudent;
+	}
+
+	printf("Best Student Name:%s ||| his grade:%f |||| his id:%d\n", maxStudent.name, maxStudent.grade, maxStudent.id);
+}
+
+void calculateTheAVG(FILE* file){
+	int counter = 0;
+
+	float avg = 0;
+
+	while (!feof(file) && counter++ <= 100) {
+
+		Student tempStudent = { 0,0,"" };
+		fseek(file, sizeof(Student) * (counter - 1), SEEK_SET);
+
+		fread(&tempStudent, sizeof(Student), 1, file);
+
+		avg += tempStudent.grade;
+	}
+
+	avg = avg / counter-1;
+	printf("The avg is:%f\n",avg);
+}
+
+
+int main(){
+	FILE* file = fopen("students.dat","a+");
+
+	if(file == NULL)
+		printf("This File isn't founded\n");
+	else{
+        update(file);
+        bestStudent(file);
+        calculateTheAVG(file);
+    }
+
+	fclose(file);
+
+	return 0;
+}

B.Sc._1_2_EmrahOzkaynak/Final_Exam/3-Question.txt

@@ -0,0 +1 @@
+---END OF FILE---

B.Sc._1_2_EmrahOzkaynak/Final_Exam/3-Questions.c

@@ -0,0 +1,14 @@
+// 15 point
+
+#include <stdio.h>
+
+int main(){
+
+    FILE *file= fopen("Data.txt","w");
+    fprintf(file,"!!!BUNU YAZAN MALDIR!!!");
+    fclose(file);
+
+    file= fopen("3-Question.txt","w+");
+    fprintf(file,"---END OF FILE---");
+    fclose(file);
+}

B.Sc._1_2_EmrahOzkaynak/Final_Exam/4-Question.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+void func(int a, int b, int c){
+    static int i= 0;
+
+    if(a <= 0){
+        return;
+    }
+    func(a-3, b-2, c+a);
+    printf("%d. Output: %d %d %d\n", ++i, a ,b ,c);
+}
+
+ int main(){
+    func(15, 12, 8);
+
+    return 0;
+ }