[참고자료]부동소수점 출력 방법

 

 

#include <iostream>
using namespace std;

int main()
{
    double pi = 3.141592653589793;
    cout << fixed;
    cout.precision(2);
    cout << pi << "\n";
    cout.precision(9);
    cout << pi << "\n";
    cout.precision(15);
    cout << pi << "\n";
}

C++

#include <stdio.h>

int main()
{
    double pi = 3.141592653589793;
    printf("%.2lf\n",pi);
    printf("%.9lf\n",pi);
    printf("%.15lf\n",pi);
}

Java

import java.io.*;
import java.util.*;

public class 부동소수점출력 {
    public static void main(String[] args) {
        double pi = 3.141592653589793;
        System.out.println(String.format("%.2f",pi));
        System.out.println(String.format("%.9f",pi));
        System.out.println(String.format("%.15f",pi));
    }
}