C++ Program to find Sum of Digits
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Find Sum of Digits
In the following example, we will add all the digits in the given number (12345) for just one time.
For example, 12345 = 1 + 2 + 3 + 4 + 5
i.e., 12345 = 15
Example
C++ Compiler
#include <iostream>
using namespace std;
int main()
{
int num = 12;
int copyNum = num;
int total = 0;
// Add Each digit from last digit
while(copyNum != 0)
{
total += copyNum % 10;
copyNum = copyNum / 10;
}
// result
cout << "The sum of digit " << num <<": " << total;
return 0;
}
Output
The sum of digit 12: 3
Find Sum of any given Digits
In the following example, we will find the sum of any given digits.
Example
C++ Compiler
#include <iostream>
using namespace std;
int main()
{
int num;
cout << "Enter a (int) number: ";
cin >> num;
int copyNum = num;
int total = 0;
// Add Each digit from last digit
while(copyNum != 0)
{
total += copyNum % 10;
copyNum = copyNum / 10;
}
// result
cout << "The sum of digit " << num <<": " << total;
return 0;
}
Output
Enter a (int) number: 24
The sum of digit 24: 6
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