Example C program to sum up all individual digits of a given number:

#include <stdio.h>

int main()

{

   int n, sum = 0, rem; 

   printf("Please enter an integer\n");

   scanf("%d",&n);



   while(n != 0)

   {

      rem = n % 10;

      sum = sum + rem;

      n = n / 10;

   }

   printf("Sum of all individual digits of an entered number is %d\n",sum);

   return 0;

}

#include <stdio.h>

int main()

{

int n, sum = 0, rem;

printf("Please enter an integer\n");

scanf("%d",&n);

while(n != 0)

{

rem = n % 10;

sum = sum + rem;

n = n / 10;

}

printf("Sum of all individual digits of an entered number is %d\n",sum);

return 0;

}

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