C Program For Student Data Using Structures

#include<stdio.h>

struct student

{

    char name[20];

    int rno;

    int m1,m2,m3;

};

int main()

{

    struct student a[10],temp;

    int i,j,n;

    printf("\nenter N value\n");

    scanf("%d",&n);

    printf("\nenter student details\n");

    for(i=0;i<n;i++)

    {

        printf("\n%dth student details\n",i);

        printf("\nenter student name\n");

        fflush(stdin);

        scanf("%s",a[i].name);

        printf("\nenter roll number\n");

        scanf("%d",&a[i].rno);

        printf("\nenter marks of m1,m2, m3\n");

        scanf("%d%d%d",&a[i].m1,&a[i].m2,&a[i].m3);

    }

    printf("\nentered data is \n");

    for(i=0;i<n;i++)

    {

        printf("\nrollNo - %d\tstudent_name - %s\tm1 - %d\tm2 - %d\tm3 - %d\n",a[i].rno,a[i].name,a[i].m1,a[i].m2,a[i].m3);

    }

    for(i=0;i<n-1;i++)

    {

        for(j=1;j<(n-i);j++)

        {

            if((a[j-1].m1 + a[j-1].m2 + a[j-1].m3) > (a[j].m1 + a[j].m2 + a[j].m3))

            {

                temp = a[j];

                a[j] = a[j-1];

                a[j-1] = temp;

            }

        }

    }

   

    printf("\nsorted data is \n");

    for(i=0;i<n;i++)

    {

        printf("\nrollNo - %d\tstudent_name - %s\tm1 - %d\tm2 - %d\tm3 - %d\t%d\n",a[i].rno,a[i].name,a[i].m1,a[i].m2,a[i].m3,a[i].m1+a[i].m2+a[i].m3);

    }

    return(0);

}