C program that accepts marks in 5 subjects and outputs average marks

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


void main()
{
int a,b,c,d,e,average;
clrscr();

printf("Enter marks of subject 1:");
scanf("%d",&a);
printf("Enter marks of subject 2:");
scanf("%d",&b);
printf("Enter marks of subject 3:");
scanf("%d",&c);
printf("Enter marks of subject 4:");
scanf("%d",&d);
printf("Enter marks of subject 5:");
scanf("%d",&e);


average=(a+b+c+d+e)/5;
printf("\nAverage=%d",average);
getch();
}