java Simple calculator using method

-

 program - 

import java.util.*;

public class Calculator

{

public static void main(String[]args)

{

Scanner sc = new Scanner(System.in);

System.out.println("Welcome to my calculator");

System.out.println("press 1 for multiplication\nPress 2 for addition\npress 3 for subtraction\npress 4 for division");

int a = sc.nextInt();

if (a==1)

{

System.out.println("Multipication Selected");

System.out.println("ener first Number");

int x = sc.nextInt();

System.out.println("ener second Number");

int y = sc.nextInt();

int res= multiplication(x,y);

System.out.println("your answer is "+res);

}

if (a==2)

{

System.out.println("Addition Selected");

System.out.println("ener first Number");

int x = sc.nextInt();

System.out.println("ener second Number");

int y = sc.nextInt();

int res= addition(x,y);

System.out.println("your answer is "+res);

}

if (a==3)

{

System.out.println("subtraction Selected");

System.out.println("ener first Number");

int x = sc.nextInt();

System.out.println("ener second Number");

int y = sc.nextInt();

int res= subtraction(x,y);

System.out.println("your answer is "+res);

}

if (a==4)

{

System.out.println("division Selected");

System.out.println("ener first Number");

int x = sc.nextInt();

System.out.println("ener second Number");

int y = sc.nextInt();

int res= division(x,y);

System.out.println("your answer is "+res);

}

else

{

System.out.println("enter a valid choice");

}

}

public static int multiplication(int a , int b)

{

int ans;

ans = a*b;

return ans;

}

public  static int addition(int a , int b)

{

int ans;

ans = a+b;

return ans;

}

public  static int subtraction(int a , int b)

{

int ans;

ans = a-b;

return ans;

}

public static  int division(int a , int b)

{

int ans;

ans = a/b;

return ans;

}

}


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