Struct kullanımına ufak bir örnek

gistfile1.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define SIZE 2
enum boolean{
	false=0,
	true
}isTrue;
typedef enum boolean bool;
 
	struct StudentData{
		char name[30];
		struct{
			int midtermExam;
			int finalExam;
			int average;
			char status[5];
		}Information;
	};
      
int i,j;  
void showStudentStatus(struct StudentData *Students);  
int Control(int examNot);  
struct StudentData Student[SIZE];  
void NotlaraGoreSirala();  
  
int main(void) {
    int loopIndex=0;  
    for(loopIndex=0;loopIndex<SIZE;loopIndex++)  
    {  
        printf("Ogrenci adi: ");  
        scanf("%s",&Student[loopIndex].name);
        int k=0;  
        while(k!=2)  
        {  
          
            printf("Ogrencinin vize notu: ");  
            scanf("%d",&Student[loopIndex].Information.midtermExam);  
            if(Control(Student[loopIndex].Information.midtermExam)==true)  
            {  
                k++;  
            }  
            else  
            {  
                printf("0-100 arasi bir deger olmalidir.\n");  
                continue;  
            }  
            printf("Ogrencinin final notu: ");  
            scanf("%d",&Student[loopIndex].Information.finalExam);  
            if(Control(Student[loopIndex].Information.finalExam)==true)  
            {  
                k++;  
            }  
            else  
            {  
                printf("0-100 arasi bir deger olmalidir.\n");  
                while(Control(Student[loopIndex].Information.finalExam)!=1)  
                {  
                    printf("Ogrencinin final notu: ");  
                    scanf("%d",&Student[loopIndex].Information.finalExam);  
                }  
                k++;  
                  
            }  
        }  
            Student[loopIndex].Information.average=Student[loopIndex].Information.finalExam*0.6+Student[loopIndex].Information.midtermExam*0.4;  
            if(Student[loopIndex].Information.average<60)  
            strncpy(Student[loopIndex].Information.status,"Kaldi\0",6);  
            else  
            strncpy(Student[loopIndex].Information.status,"Gecti\0",6);  
    } 
    
    showStudentStatus(Student);  
    
    getch();
    
    return 0;  
}  
  
int Control(int examNot)  
{  
    if(examNot>=0 && examNot <=100)  
    return 1;  
    else  
    return 0;  
}  
  
void showStudentStatus(struct StudentData *Students)  
{  
    
    printf("Ogrenci Adi");  
    printf("\tVize Notu");  
    printf("\tFinal Notu");  
    printf("\tOrtalama");  
    printf("\tDurum\n");
    NotlaraGoreSirala();
    for(i=0;i<SIZE;i++)  
    {     
        printf("%12s",Students[i].name);  
        printf("%12d",Students[i].Information.midtermExam);  
        printf("%15d",Students[i].Information.finalExam);  
        printf("%10d",Students[i].Information.average);  
        printf("%18s",Students[i].Information.status);  
          
        printf("\n");  
    }
} 
  
void NotlaraGoreSirala()  
{  
    struct  StudentData student;  
    for(i=0;i<SIZE-1;i++)  
    {  
        for(j=0;j<SIZE-i-1;j++)  
        {  
            if(Student[j+1].Information.average >Student[j].Information.average)  
            {  
                student = Student[j];  
                Student[j] = Student[j+1];  
                Student[j+1] = student;  
            }  
        }  
    }  
}