Program 1 :
// C program to compute sum of digits in
// number.
#include <stdio.h>
/* Function to get sum of digits */
int getSum(int n)
int sum = 0;
while (n != 0)
sum = sum + n % 10;
n = n / 10;
return sum;
// Driver code
int main()
int n = 687;
printf(" 0 ", getSum(n));
return 0;
Program 2:
#include<stdio.h>
#include<conio.h>
void main()
int n,i;
float avg[5],s1[5],s2[5],s3[5],sum[5];
clrscr();
for(i=0;i<5;i++)
printf("
Enter marks of students 0 in 3 subjects:",i+1);
scanf("000",&s1[i],&s2[i],&s3[i]);
for(i=0;i<5;i++)
sum[i]=s1[i]+s2[i]+s3[i];
avg[i]=sum[i]/3;
for(i=0;i<5;i++)
printf("
Student 0's marks:
Total : %.2f
Average : %.2f",i+1,sum[i],avg[i]);
getch();