#include <iostream.h>

void main()
{
	int choice = 0;
	int num1=0;
	int num2=0;

	cout << "Menu:"			<< endl;
	cout << "1. add "		<< endl;
	cout << "2. subtract "	<< endl;
	cout << "3. multiply "	<< endl;
	cout << "4. divide "	<< endl << endl;

	cout << "Enter choice: ";
	cin >> choice;

	cout << "Enter number 1: ";
	cin >> num1;

	cout << "Enter number 2: ";
	cin >> num2;

	if (choice == 1)
		cout << num1 << "+" << num2 << "=" << num1 + num2 << endl;
	else if (choice == 2)
		cout << num1 << "-" << num2 << "=" << num1 - num2 << endl;
	else if (choice == 3)
		cout << num1 << "*" << num2 << "=" << num1 * num2 << endl;
	else if (choice == 4)
		if (num2 != 0)
			cout << num1 << "/" << num2 << "=" << num1 / num2 << endl;
		else
			cout << "Cannot divide by zero." << endl;
	else
		cout << "Invalid menu option." << endl;

}