0.1+0.2在不同语言中的表现

python

print(0.1+0.2);// output 0.30000000000000004

js

0.2+0.1;//output  0.30000000000000004

golang

package main

import (
    "fmt"
  
)

func main() {
   fmt.Println(0.1+0.2)//output 0.3
}

JAVA

public static void main(String[] args) {
    System.out.println(0.1+0.2);  //output  0.30000000000000004
  }

PHP

echo 0.1+0.2;//output 0.3