Need quick help

I need to create an error message when a number is divided by 0. How would i go about doing that

Code:

#include <iostream>
using namespace std;

int main ()
{
	// Variable Declarations
	int num1, num2, num3, num4;
	char letter = 'y', symbol;
    

    // Prompt 
	cout << "This Program will add, subtract, multiply, and divide" 
		 << "the two numbers you enter." << endl;
    cout << endl;

	while (letter == 'y')
	{ 
		cout << "Please enter two numbers: ";
		cin >> num1 >> num2;
		cout << endl;

		cout << "Please input the operation you would like to use: ";
		cin >> symbol;
		cout << endl;

		if (symbol == '+')
		 {
			 num3 = num1 + num2;
		     cout << "The sum is: " << num3 << endl;
		 }
        else if (symbol == '-')
		 {  
		     num3 = num1 - num2;
		     cout << "The difference is: " << num3 << endl;
		 }
		else if (symbol == '*')
		 {   
		     num3 = num1 * num2;
		     cout << "The product is: " << num3 << endl;
		  }
		else if (symbol == '/')
		  {  
		     num3 = num1 / num2;
		     num4 = num1 % num2;
			 cout << "The quiotient is: " << num3 << " The remainder is: " << num4 << endl;
		  }
		else
			cout << "Invalid symbol." << endl;
	
		cout << "Would you like to run the program again [y/n] ";
		cin >> letter;
		cout << endl;
	}
        cout << "End of Program" << endl;
	return 0;
}

Code:

else if (symbol == '/')
{
if(num2 == 0)
cout << "error" << endl;

I think.

Well, it would be wrong if 0/10 too, so check both numbers:

Code:

else if (symbol == '/')
{
if(num2 == 0 || num1==0 )
cout << "error" << endl;

Originally Posted by wildex999

Well, it would be wrong if 0/10 too, so check both numbers:

Code:

else if (symbol == '/')
{
if(num2 == 0 || num1==0 )
cout << "error" << endl;

umm, 0/10 = 0, and is perfectly legal in mathimatics

10/0 == ERRRRRRRRRRR

Damn, need to check my math skills again -_-'