I have doubt in basic calculator

#1

i was comfortable with pattern printing questions but no example of explanation for this type of question was given in the video tutoriala and it is my first time coding so i need help please explain me the framework of the code

#2

Hey @kartikey0208_95720f9de379dde2
This might help.
Simply Put a loop and take input operator and then take input of two digits and then perform the operation till the user inputs ‘x’ or ‘X’.

Code

import java.util.Scanner;
public class main{
   static Scanner scn=new Scanner(System.in);
    public static void main(String[] args) {
        char ch;
        do {
            ch = scn.next().charAt(0);  // Use cin in case of c++
            if (ch == '+' || ch == '-' || ch == ' * ' || ch == '/' || ch == '%') {
                operation(ch);
            } else {
                if (ch != 'x' && ch != 'X')
                    System.out.println("Invalid operation. Try again.");
            }
        } while (ch != 'x' && ch != 'X');
    }
    public static void operation(char ch) {
        int a = scn.nextInt(); // Use cin in case of c++
        int b = scn.nextInt(); // Use cin in case of c++
        int res = 0;
        switch (ch) {
        case '+': {
            res = a + b;
            break;
        }
        case '-': {
            res = a - b;
            break;
        }
        case '*': {
            res = a * b;
            break;
        }
        case '/': {
            res = a / b;
            break;
        }
        case '%': {
            res = a % b;
            break;
        }
        }
        System.out.println(res);
    }
}
#3

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