[FEATURE REQUEST] < Add Calculator Program>

[nohaharoon982-ctrl]

What would you like to Propose?

I would like to contribute a basic calculator program that performs basic arithmetic operations(Addition, Subtraction, Multiplication, Division). It will be built using Java and will follow clean code principles.

Issue details

Tech stack used:

• Programming Language: Java
• Git and GitHub for version control

Features:

• Input Validation
• Basic arithmetic operations
• Clean and readable code

Additional Information

No response

[ArthBachhuka123]

class InvalidInputException extends Exception {
@OverRide
public String getMessage() {
return "Invalid input ";
}
@OverRide
public String toString() {
return "Invalid input";
}

}

class MaxInputException extends Exception {
@OverRide
public String getMessage() {
return "max input";
}
@OverRide
public String toString() {
return "max input";
}

}

class MaxMultiplierReachedExcpetion extends Exception {
@OverRide
public String getMessage() {
return "max multiplier";
}
@OverRide
public String toString() {
return "max multiplier";
}

}

public class Calculator {

public int add ( int a , int b ) throws MaxInputException , InvalidInputException{
	int res = a+b;
	return res ;
}
public int multiply ( int a , int b ) throws MaxInputException , InvalidInputException , MaxMultiplierReachedExcpetion{
	int res = a*b;
	return res;

}
public int divide ( int a , int b ) throws MaxInputException , InvalidInputException {
int res = a/b ;
return res;
}

public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);
	Calculator c = new Calculator();
	System.out.println(" a = ");
	int a = sc.nextInt();
	System.out.println("b = ");
	int b = sc.nextInt();
	// conditions are max input can be 1000 for a and b , a==b is an invalid input , max multiplier can be 10000 ;
	try {
		if ( a > 1000 || b>1000)
    		throw new MaxInputException();
    	if (a==b)
    		throw new InvalidInputException();
		int res = c.add(a, b);
		int res2 = c.multiply(a, b);
		if(res2>10) {
			throw new MaxMultiplierReachedExcpetion();
		}
		System.out.println("result is " + res);
		
	}
	catch(MaxInputException e) {
		System.out.println(e.getMessage());
	}
	catch(InvalidInputException es) {
		System.out.println(es.getMessage());
	}
	catch(MaxMultiplierReachedExcpetion ess){
		System.out.println(ess.getMessage());
	}
}

}