C Program to find Sum of Digits

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 <stdio.h> 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 printf("The sum of digit %d: %d", 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 <stdio.h> int main() { int num, total = 0; printf("Enter a (int) number: "); scanf("%d", &num); int copyNum = num; // Add Each digit from last digit while(copyNum != 0) { total += copyNum % 10; copyNum = copyNum / 10; } // result printf("The sum of digit %d: %d", num, total); return 0; }

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