Java程序：两个数相乘

编写一个Java程序来乘以两个数，并附带一个例子。在此编程语言中，有一个算术(*)运算符用于乘以两个或多个数字，我们将使用它来获得乘积。

此示例接受两个整数值，并使用算术(*)运算符将这些数字相乘。接下来，println语句将输出这些值的乘积。

package SimpleNumberPrograms;

import java.util.Scanner;

public class MultiplyTwoNumbers {
	private static Scanner sc;

	public static void main(String[] args) {
		int Number1, Number2, product;
		sc = new Scanner(System.in);
		
		System.out.print("Enter the First integer Value =  ");
		Number1 = sc.nextInt();

		System.out.print("Enter the Second integer Value = ");
		Number2 = sc.nextInt();
		
		product = Number1 * Number2;
		System.out.println("\nProduct of the two integer values = " + product);
	}
}

Java程序：使用函数相乘

在此示例中，productofTwo函数接受两个double值，并返回它们的乘积。在主程序中，我们调用productofTwo函数来返回给定两个数字的乘积。

package SimpleNumberPrograms;

import java.util.Scanner;

public class MultiplyTwoNumbers2 {
	private static Scanner sc;

	public static void main(String[] args) {
		double Number1, Number2, product;
		sc = new Scanner(System.in);
		
		System.out.print("Enter the First =  ");
		Number1 = sc.nextDouble();

		System.out.print("Enter the Second = ");
		Number2 = sc.nextDouble();
		
		product = productofTwo(Number1, Number2);
		System.out.println("\nProduct of two float values = " + product);
	}
	
	public static double productofTwo(double a, double b) {
		return a * b;
	}
}

Enter the First =  19.5
Enter the Second = 33.2

Product of two float values = 647.4000000000001