Module: 算术表达式


Problem

6/7

变量交换

Problem

给定两个从键盘输入的变量。需要交换这些变量的值：变量 a 必须包含之前存储在 b，并且变量  b  存储在先前存储在  a 中的内容中/em>。然后输出这些变量，首先是变量a，然后是b
与必要的操作员一起完成程序。

time 1000 ms
memory 256 Mb
Rules for program design and list of errors in automatic problem checking

Teacher commentary

Insert the missing code snippets
Java
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import java.util.Scanner;
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public class Main {
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    public static void main(String[] args) {
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        Scanner in = new Scanner(System.in);
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        int a = in.nextInt();
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        int b = in.nextInt();
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        System.out.print(a+" "+b);
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    }
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}

     

Program check result

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