JavaBase2202.rar

package chap2; import java.util.Scanner; public class Demo11 { public static void main(String[] args) { Scanner scan=new Scanner(System.in); System.out.print("请输入第一个整数："); int num1=scan.nextInt(); System.out.print("请输入四则运算符（+、-、*、/）："); String operation=scan.next(); System.out.print("请输入第二个整数："); int num2=scan.nextInt(); int result=0;//声明变量，用于保存计算的结果 if(operation.equals("+")){ result=num1+num2; }else if(operation.equals("-")){ result=num1-num2; }else if(operation.equals("*")){ result=num1*num2; }else if(operation.equals("/")){ result=num1/num2;//取商 }else{ System.out.println("输入的运算符无效！"); return; } System.out.println("结果："+num1+operation+num2+"="+result); } }