Question

How to calculate sum digits and count digits of a number in C

Answer 1

#include <stdio.h>

int main(void)
{
    int n = 12345, sum = 0, count = 0;
 
    while (n > 0)
    {
        sum += n % 10;
        n = n / 10;
        count++;
    }
    printf("sum = %i count = %i", sum, count);
            
    return 0;
}


/* 
run:

sum = 15 count = 5

*/

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