Question

How to concatenate two strings in C++

Answer 1

#include <iostream>

int main() {
    std::string s1 = "c++ programming";
    std::string s2 = "c programming";

    s1 += " " + s2;
    
    std::cout << s1;
}




/*
run:

c++ programming c programming

*/

 

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Answer 2

#include <iostream>

int main() {
    std::string s = "c++ programming";

    s.append(" c programming");
    
    std::cout << s;
}




/*
run:

c++ programming c programming

*/

 

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Answer 3

#include <iostream>

int main() {
    std::string s = "c++ programming";

    s.append(" ").append("c programming").append("\n");
    
    std::cout << s;
}




/*
run:

c++ programming c programming

*/

 

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Answer 4

#include <iostream>
#include <string>
 
int main()
{
    std::string s1 = "c++ c c#";
    std::string s2 = " java python";
    std::string s3;
 
    s3 = s1 + s2;
 
    std::cout << s3 << std::endl;
}
 
 
 
/*
run:
 
c++ c c# java python
 
*/

 

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