Question

write a program to input an integer and find the sum of its digits​

Answer 1

//write a program to input an integer and find the sum of its digits​

//works only for numbers between 10 to 99

#include <stdio.h>

#include <stdlib.h>

int main()

{

   int n, sum=0, rem, quo;

   printf("Enter an integer :- ");

   scanf("%d",&n);

   quo = n/10;

   rem = n%10;

   //printf("Quotient = %d\nRemainder = %d\n",quo,rem);

   sum = quo + rem;

   printf("Sum of digits = %d\n\n",sum);

   return 0;

}

//works for all integers

#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;

}