Sum of digits C program to calculate the sum of digits of a number, we use modulus operator (%) to extract individual digits of a number and keep on adding them.
#include <stdio.h>
int main()
{
int n, t, sum = 0, remainder;
printf("Enter an integer\n");
scanf("%d", &n);
t = n;
while (t != 0)
{
remainder = t % 10;
sum = sum + remainder;
t = t / 10;
}
printf("Sum of digits of %d = %d\n", n, sum);
return 0;
}
C programming
output:
Enter an integer
4
Sum of digits of 4 = 4
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