Java 如何更正这个计算器程序?
这是我的计算器程序Java 如何更正这个计算器程序?,java,Java,这是我的计算器程序 /*program calculator */ import java.util.Scanner; class calculator { public static void main (String args[]) { System.out.println("First enter two number , then type Sum for addition, Sub for subtraction, Mul for multiplication
/*program calculator */
import java.util.Scanner;
class calculator
{ public static void main (String args[])
{ System.out.println("First enter two number , then type Sum for addition, Sub for subtraction, Mul for multiplication, Div for division");
int x, y;
Scanner in = new Scanner(System.in);
System.out.println("Enter 1st number");
x = in.nextInt();
System.out.println("Enter 2nd number");
y = in.nextInt();
System.out.println("Enter Sum for addition, Sub for subtraction, Mul for multiplication, Div for division");
String z = in.next();
if (z = "Sum") {a = x + y;};
if (z = "Sub") {a = x - y;};
if (z = "Mul") {a = x * y;};
if (z = "Div") {a = x / y;};
System.out.println("Result of entered two number = "+z);
}
}
它在语句
if(z=“Sum”){a=x+y;}中显示错误“不兼容类型”代码>我想它肯定有更多的错误。我是初学者。我想使这个程序完美无误,因此它的工作原理与小型计算器完全相同。您可以使用“==”进行比较
(并打印结果a而不是z)
谢谢用户3804188
if (z.equals("Sum")) {a = x + y;};
if (z.equals("Sub")) {a = x - y;};
if (z.equals("Mul")) {a = x * y;};
if (z.equals("Div")) {a = x / y;};
System.out.println("Result of entered two number = " + a);