PROGRAM TO CALCULATE THE SUM ,AVERAGE,PERCENTAGE OF 5 SUBJECT IN C

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

int main()
{
   int s1, s2, s3, s4, s5, sum, total = 500;
   float per,avg;

   printf("\nEnter marks of 5 subjects : ");
   scanf("%d %d %d %d %d", &s1, &s2, &s3, &s4, &s5);

   sum = s1 + s2 + s3 + s4 + s5;
   printf("\nSum : %d", sum);

   per = (sum * 100) / total;
   printf("\nPercentage : %f", per);

   avg=sum/5;
   printf(""\n Average:%f, avg);
   return (0);
}