Question

How to convert float to string in C++

Answer 1

#include <iostream>   
 
int main() {
  std::string pi = "pi = " + std::to_string(3.14159265359);
  
  std::cout << pi;
}
 
 
 
/*
run:
 
pi = 3.141593
 
*/

 

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Answer 2

#include <iostream>
#include <sstream>

int main() {
    double d = 23.8713;
  
    std::ostringstream os;
      
    os << d;
      
    std::string s = os.str();
     
    std::cout << s;
}
 
 
 
/*
run:
 
23.8713
 
*/

 

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