Question

How to use setprecision in C++

Answer 1

#include <iostream>
#include <iomanip>

int main() {
    double d = 23.81489;

    std::cout << std::setprecision(5) << d;
    
    return 0;
}
 
 
 
 
/*
run:
 
23.815
 
*/

 

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Answer 2

#include <iostream>
#include <iomanip>

int main() {
    double d = 23.81489;

    std::cout << std::fixed << std::setprecision(4) << d;
    
    return 0;
}
 
 
 
 
/*
run:
 
23.8149
 
*/

 

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