Java 随机产生数字计算加减乘法

左手的ㄟ右手 2021-11-01 11:48 378阅读 0赞

package java_1;
    
    import java.util.Scanner;
    
    public class Hello{
    	
    	public static void main(String[] args) {
    		Scanner input = new Scanner (System.in);
    		int number1 = (int)(Math.random()*10);  //Generate random integers
    		int number2 = (int)(Math.random()*10);
    		int flag = (int)(Math.random()*4);
    		
    		try {
    			if(flag==0)  //add
    			{
    				System.out.print(number1 + " + " + number2 + " = ");
    				int answer1 = input.nextInt();
    				if(answer1!=(number1+number2))
    					System.out.print(number1+" + "+number2+" = " +(number1+number2) 
    							+" , Your answer is false");
    				else System.out.print("Your answer is ture");
    			}
    			else if(flag==1) //subtract
    			{
    				System.out.print(number1 + " - " + number2 + " = ");
    				int answer1 = input.nextInt();
    				if(answer1!=(number1-number2))
    					System.out.print(number1+" - "+number2+" = " +(number1-number2) 
    							+" , Your answer is false");
    				else System.out.print("Your answer is ture");
    			}
    			else if(flag==2)  //multiply
    			{
    				System.out.print(number1 + " * " + number2 + " = ");
    				int answer1 = input.nextInt();
    				if(answer1!=(number1*number2))
    					System.out.print(number1+" * "+number2+" = " +(number1*number2) 
    							+" , Your answer is false");
    				else System.out.print("Your answer is ture");
    			}
    //			else if(flag==3) //division
    //			{
    //				System.out.print(number1 + " / " + number2 + " = ");
    //				int answer1 = input.nextInt();
    //				if(answer1!=(number1/(float)number2))
    //					System.out.print(number1+" / "+number2+" = " +(number1/(float)number2) 
    //							+" , Your answer is false");
    //				else System.out.print("Your answer is ture");
    //			}
    			
    		}
    		
    		finally {
    			input.close();  //close the input
    		}
    	}
    }