struct program

#include<conio.h>
#include<stdio.h>

struct PCM
{
    int P;
    int C;
    int M;
};

struct Student
{
    char Sname[30];
    char Sid[10];
    int total;
    struct PCM sub;
};




void sort(int n,struct Student srec[20],struct Student temp[20])
{
    int i,j;


    for(i=1;i<=n-1;i++)
    {
        for(j=1;j<=n-i;j++)
        {
            if(srec[i].total<srec[i+1].total)
            {
                temp[i]=srec[i];
                srec[i]=srec[i+1];
                srec[i+1]=temp[i];
            }
            else if(srec[i].total==srec[i+1].total)
            {
                if(srec[i].sub.M>srec[i+1].sub.M)
                {
                    temp[i]=srec[i];
                    srec[i]=srec[i+1];
                    srec[i+1]=temp[i];
                }
                else if(srec[i].sub.M==srec[i+1].sub.M)
                {
                    if(srec[i].sub.P>srec[i+1].sub.P)
                    {
                        temp[i]=srec[i];
                        srec[i]=srec[i+1];
                        srec[i+1]=temp[i];
                    }
                    else if(srec[i].sub.P==srec[i+1].sub.P)
                    {
                        if(srec[i].sub.C>srec[i+1].sub.C)
                        {
                           temp[i]=srec[i];
                            srec[i]=srec[i+1];
                            srec[i+1]=temp[i];
                        }
                    }
                }
            }
        }

    }
}


void main()
{
    struct Student srec[20];
    struct Student temp[20];
    struct PCM sub[20];

    int n,i;

    printf("enter total no of students");
    scanf("%d",&n);
    printf("enter student name,id,PCM marks respectively ");
    for(i=1;i<=n;i++)
    {
        scanf("%s%s%d%d%d",srec[i].Sname,srec[i].Sid,&srec[i].sub.P,&srec[i].sub.C,&srec[i].sub.M);
        srec[i].total=srec[i].sub.P+srec[i].sub.C+srec[i].sub.M;

    }

    sort(n,srec,temp);

    for(i=1;i<=n;i++)
    {
        printf("\n %4s   %4s  %4d",srec[i].Sname,srec[i].Sid,srec[i].total);

    }






}