Question

How to declare a constant string in C++

Answer 1

#include <iostream>
#include <string>

int main() {
    const std::string str = "ABC"; 
    
    std::cout << str << std::endl;          
}



/*
run:

ABC

*/

 

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Answer 2

#include <iostream>

int main() {
    const char str[] = "ABC"; 
    
    std::cout << str << std::endl;          
}



/*
run:

ABC

*/

 

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Answer 3

#include <iostream>
#include <string>

int main() {
    constexpr char str[] = "ABC"; 
    
    std::cout << str << std::endl;      
}



/*
run:

ABC

*/

 

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