Question

How to square every digit of a number in C

Answer 1

#include <stdio.h>

int SquareDigits(int number) {
    int digit, result = 0, mul = 1;

    while (number > 0) {
        digit = number % 10;
        result += digit * digit * mul;
        mul *= (digit <= 3) ? 10 : 100;
        number /= 10;
    }

    return result;
}

int main() {
    int num = 234;

    num = SquareDigits(num);

    printf("%d", num);

    return 0;
}




/*
run:

4916

*/

 

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