Question

How to check if there is only one time zero in a string with C++

Answer 1

#include <iostream>
#include <sstream>

bool OnlyOneZero(std::string str) {
    int count = 0;
    
    for (char ch : str) {
        if (ch == '0') {
            count++;
        }
    }
    
    return count == 1;
}

int main() {
    std::string s1 = "294098";
    std::cout << (OnlyOneZero(s1) ? "yes" : "no") << "\n";

    std::string s2 = "47034099";
    std::cout << (OnlyOneZero(s2) ? "yes" : "no") << "\n";
}




/*
run:

yes
no

*/

 

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