Question

How to check if a number has zero in the center in C++

Answer 1

#include <iostream>
#include <string>

bool hasZeroInCenter(int number) {
    // Convert the number to a string
    std::string numStr = std::to_string(number);
    
    if (numStr.length() % 2 == 0) {
        return false; // Even length = no center digit
    }
    
    int centerIndex = numStr.length() / 2;
    
    return numStr[centerIndex] == '0';
}

int main() {
    int number = 3720961;

    if (hasZeroInCenter(number)) {
        std::cout << "yes" << std::endl;
    } else {
        std::cout << "no" << std::endl;
    }
}



/*
run:

yes

*/

 

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