Free all codes

#include < stdio.h >

void main()
{
int s1, s2, s3, s4, s5, sum, total = 500;
float per;
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)/500;
/* percentage formula*/
printf("\nPercentage : %f", per);
}