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27 lines
591 B
27 lines
591 B
import java.util.Scanner;
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public class CALC{
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public static void main(String args[]){
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double x;
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double y;
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String z;
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Scanner sc=new Scanner(System.in)
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System.out.println("输入第一个数：");
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x=sc.nextDouble();
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System.out.println("输入运算符：");
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z=sc.next();
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System.out.println("输入第二个数：");
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y=sc.nextDouble();
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System.out.print("结果是：");
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switch(z){
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case"+":System.out.println(x+y);
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break;
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case"-":System.out.println(x-y);
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break;
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case"*":System.out.println(x*y);
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break;
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case"/":System.out.println(x/y);
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break;
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}
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}
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}
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