Java 程式使用 switch case 生成計算器


以下程式接受兩個整數變數,獲取有關運算子的操作。根據選定的運算子,程式執行相應操作並列印結果。

示例

import java.util.Scanner;
public class ab39_CalculatorUsingSwitch {
   public static void main(String args[]) {
      Scanner sc = new Scanner(System.in);
      System.out.println("Enter value of 1st number ::");
      int a = sc.nextInt();

      System.out.println("Enter value of 2nd number ::");
      int b = sc.nextInt();

      System.out.println("Select operation");
      System.out.println("Addition-a: Subtraction-s: Multiplication-m: Division-d: ");
      char ch = sc.next().charAt(0);
      switch(ch) {
         case 'a' :
         System.out.println("Sum of the given two numbers: "+(a+b));
         break;
         case 's' :
         System.out.println("Difference between the two numbers: "+(a-b));
         break;
         case 'm' :
         System.out.println("Product of the two numbers: "+(a*b));
         case 'd' :
         System.out.println("Result of the division: "+(a/b));
         break;
         default :
         System.out.println("Invalid grade");
      }
   }
}

輸出

Enter value of 1st number ::
52
Enter value of 2nd number ::
85
Select operation
Addition-a: Subtraction-s: Multiplication-m: Division-d:
a
Sum of the given two numbers: 137

更新日期:21-Jun-2024

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