Question

How to check if string is empty in C++

Answer 1

#include <iostream>

int main() {
    std::string s = "";
    
    if (s.empty()) {
        std::cout << "empty";
    } else {
        std::cout << "not empty";
    }
    
    return 0;
}



/*
run:

empty

*/

 

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Answer 2

#include <iostream>

int main() {
    std::string s = "";
    
    if (!s.length()) {
        std::cout << "empty";
    } else {
        std::cout << "not empty";
    }
    
    return 0;
}



/*
run:

empty

*/

 

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