C++ program to find sum of digits of given number

C++ program to find sum of digits of given number

#include<iostream>

using namespace std;

int main()

{

    int n,r,s=0;

    cout<<"Enter a number : ";

    cin>>n;

    while(n>0)

    {

        r=n%10;

        s=s+r;

        n=n/10;

    }

    cout<<"Sum of digits of given number is "<<s;

    return 0;

}

OUTPUT:

Enter a number : 123

Sum of digits for a given number is 6

C++ program for sum of digits of given number using for loop

#include<iostream>

using namespace std;

int main()

{

    int n,r,s=0;

    cout<<"Enter a number : ";

    cin>>n;

    for(;n>0;)

    {

        r=n%10;

        s=s+r;

        n=n/10;

    }

    cout<<"Sum of digits of given number is "<<s;

    return 0;

}

OUTPUT:

Enter a number : 123

Sum of digits for a given number is 6