Question

How to check if a number contain zero in C

Answer 1

#include <stdio.h>
#include <stdbool.h>

// Function to check if a number contains the digit 0
bool containsZero(int num) {
    if (num == 0) return true; // Special case for 0

    while (num > 0) {
        if (num % 10 == 0) {
            return true;
        }
        num /= 10;
    }
    
    return false;
}

int main() {
    int num = 97105;

    if (containsZero(num)) {
        printf("The number contains 0.\n");
    } else {
        printf("The number does not contain 0.\n");
    }

    return 0;
}


/*
run:

The number contains 0.

*/

 

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