#include <iostream>
using namespace std;
int main ()
{
	char choice;
	int num1, num2, num3;

	cout <<"Menu" <<endl;
	cout <<"=============" <<endl;
	cout <<"+) Add" <<endl;
	cout <<"-) Subtract" <<endl;
	cout <<"*) Multiply" <<endl;
	cout <<"/) Divide" <<endl;
	cout <<"x) Exit" <<endl;
	cout <<"==============" <<endl;
	cout <<"Enter your choice: ";
	cin >> choice;
	choice = tolower(choice);

if (choice != '+' || choice != '-' || choice != '*' || choice != '/' || choice != 'x')
		cout <<"Valid choices are +, -, *, /, or x." <<endl;
else
{
switch (choice)
	{
		case '+':	
			{	cout <<"Enter the two operands: ";
				cin >> num1 >> num2;
				num3 = num1 + num2;
				cout << num1 <<" + " << num2 <<" is " << num3 <<endl; 
			}
			break; 
		case '-': 
			{	cout <<"Enter the two operands: ";
				cin >> num1 >> num2;
				num3 = num1 - num2;
				cout << num1 <<" - " << num2 <<" is " << num3 << endl; 
			}
			break;
		case '*': 
			{	cout <<"Enter the two operands: ";
				cin >> num1 >> num2;
				num3 = num1 * num2;
				cout << num1 <<" * " << num2 <<" is " << num3 <<endl; 
			}
			break;
		case '/': 
			{	cout <<"Enter the two operands: ";
				cin >> num1 >> num2;
				if (num2 == 0)
					cout <<"Division by zero is not possible. " <<endl;
				else
					{ 
						num3 = num1 / num2;
						cout << num1 <<" / " << num2 <<" is " << num3 <<endl; 
					}
			}
			break;
		case 'x': cout <<"You have chosen to exit the program." <<endl;
			break;
	}
}
	


}