y的原始类型int在编译期间没有字段

Question

I am writing a program to perform some arithmetic operations on integers gotten from user. I keep getting an error concerning the subtract variable not being a primitive type int.

import java.util.Scanner;

//This program is used to display the sum, product, difference and quotient of two numbers

public class test6 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        //Create a scanner to obtain user input
        Scanner input = new Scanner(System.in);

        int x,y; //Declare the two integer variables
        int sum, product;
        double quotient;
        long subtract;

        System.out.println("Enter the first integer: "); //Prompt user for input
        x = input.nextInt(); //Read first integer

        System.out.println("Enter the second integer: "); //Prompt user for input
        y = input.nextInt(); //Read second integer

        sum = x + y; //Calculate the sum of the two integers
        subtract = x - y; //Calculate the subtract of the two integer
        product = x * y; //Calculate the product of the two integers
        quotient = x % y; //Calculate the quotient of the two integers

        System.out.printf("The sum of %d and %d is %d", x , y, sum);

        System.out.printf("The difference of %d and %d is %d", x , y. subtract);

        System.out.printf("The product of %d and %d is %d", x , y, product);

        System.out.printf("The quotient of %d and %d is %d", x , y , quotient);

    }

}

Answer 1

You just have a typo in line

 System.out.printf("The difference of %d and %d is %d", x , y. subtract);

Change your dot to comma . As @Kevin pointed the compiler tries to resolve subtract as a field on the int variable.

System.out.printf("The difference of %d and %d is %d", x , y, subtract);

Answer 2

The variable quotient is not an integer type. As it is the the result of the remainder of an integer division. It should be defined as a type double