C and C++ Programs to Find Sum of Digits of a Given Number

The following are C and C++ programs to find sum of digits of any given integer.

C Program

#include<stdio.h>
#include<conio.h>
void main()
{

clrscr();
int n,sum=0;
printf("Enter a number");
scanf("%d",&n);
while(n>0)
{
sum=sum+n%10; //adding last digit
n=n/10; //removing last digit
}
printf("Sum of digits of the number = %d",sum);
getch();
}

C++ Program

#include<iostream.h>
#include<conio.h>
int main()
{
clrscr();
int n,sum=0;
cout<<"Enter a number";
cin>>n;
while(n>0)
{
sum=sum+n%10; //adding last digit
n=n/10; //removing last digit
}
cout<<"Sum of digits of the number ="<<sum;
getch();
return 0;
}