#include <stdio.h>
int main()
{
int n, sum = 0, remainder;
printf("Enter a positive integer: ");
scanf("%d", &n);
// Computing the sum of the digits
while (n != 0)
{
remainder = n % 10;
sum += remainder;
n /= 10;
}
printf("Sum of the digits = %d", sum);
return 0;
}
In this program, we first take a positive integer as input from the user. Then, we loop through the digits of the number and add each digit to a variable sum. Finally, we print the computed value of sum.