Question

这是我的if-else声明：

public static void main(String[] args) {

        Scanner input = new Scanner (System.in);
        int number;
        System.out.println("Enter Integer: ");
        number = input.nextInt();
        if (number % 7 == 0) {
                System.out.println(number + " is divisible by 7");
        }
            else {
                System.out.println(number + " isn't divisible by 7");
        }
    }

Answer 1

别介意开关 - 您也不需要。
您可以将其转换为一个语句：

System.out.println(number + " is" + (number % 7 == 0 ? "" : "n't") + " divisible by 7");

Answer 2

number = input.nextInt();
switch(number % 7)
{
 case 0:
    System.out.println(number + " is divisible by 7");
    break;

 default:
    System.out.println(number + " isn't divisible by 7");
}

Answer 3

 number = input.nextInt();
    a = number % 7

 switch (a) {
            case 0:   System.out.println(number + " is divisible by 7");
                     break;

            default: System.out.println(number + " isn't divisible by 7");
                     break;
        }

Answer 4

检查出来：

    switch (number % 7) {
    case 0:
        System.out.println(number + " is divisible by 7");
        break;
    default:
        System.out.println(number + " isn't divisible by 7");
    }

OR

switch (number % 7) {
case 0:
    System.out.println(number + " is divisible by 7");
    break;
case 1: // Fall through
case 2:
case 3:
case 4:
case 5:
case 6:
    System.out.println(number + " isn't divisible by 7");
}

Answer 5

试试这样;

Scanner input = new Scanner (System.in);
int number;
System.out.println("Enter Integer: ");
number = input.nextInt();
int tempNumber = number % 7;
switch(tempNumber) {
      case 0:
         System.out.println(number + " is divisible by 7");
         break;
      default :
         System.out.println(number + " isn't divisible by 7");
 }

如何将这个if-else语句转换为switch语句？

5 个答案: