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; }

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; }

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