Question

How to replace part of a string in C++

Answer 1

#include <iostream>
#include <string>

int main()
{
	std::string s = "c c++ java php";
	
	s.replace(6, 4, "c#");

	std::cout << s;
}



/*
run:

c c++ c# php

*/

 

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Answer 2

#include <iostream>
#include <string>

int main()
{
    std::string s = "c++ programming";
     
    s.replace(s.find("gramming"), 8,  " 17");
 
    std::cout << s;
}



/*
run:

c++ pro 17

*/

 

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Answer 3

#include <iostream>
#include <regex>
 
int main() {
    std::string s = "c++ programming";
     
    s = regex_replace(s, std::regex("\\gramming"), " 17");
 
    std::cout << s;
}
 
 
 
/*
run:
 
c++ pro 17
 
*/

 

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