All Notes on BCA

Syntax


import java.*;
import java.io.*;
import java.util.*;

class switch_case
{
 public static void main(String arg[])
  { 
  // Arithmetical  opration perform using switch case
   Scanner sc = new Scanner(System.in);
   System.out.println("Enter Two Numbers : ");

    int n1 = sc.nextInt();
    int n2 = sc.nextInt();	
   System.out.println("Press 1. add\n2. sub\n3. mul\n4. div\n\nEnter Your Choice Number : ");
    int ch = sc.nextInt();
   
     switch(ch)
	  {
	   case 1:
	   {
	    int re = n1 + n2;
		System.out.println("Addition is "+re);
		break;
	    }
	   case 2:
	   {
	    int re = n1 - n2;
		System.out.println("Subtraction is "+re);
		break;
	    }
	   case 3:
	   { 
	    int re = n1 * n2;
		System.out.println("Multiplication is "+re);
		break;
		}
	  case 4:
	    {
		int re = n1 / n2;
		System.out.println("Division is "+re);
		break;
	   }
	   default:
        System.out.println("Your Choice is Wrong!!!");	   
	   }
   
   } 
 }

OUTPUT


Enter Two Numbers : 10
20
Press 1. add
2. sub
3. mul
4. div

Enter Your Choice Number : 1

Addition is 30