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Switch Default Statement

VainCape (1)
(First post! :] ) Hello. Im trying to make a basic calculator with four operators only. I want the program to state an error if the user doesnt enter one of the four operators. I assume this would be achieved using the 'default' statement but its not working for me. Any help would be appreciated. thank you 

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  #include <iostream>
  #include <conio.h>
  using namespace std;

int main ()
{
	float numb1, numb2;
	char opr;
	float answer;
	char response;
	
	while( response != 'n')
	{
			
	cout << "\nEnter first number, operator, second number: ";
	cin >> numb1 >> opr >> numb2;
	
	cout << "\nAnswer is: " << answer << endl;
		
	switch (opr)
	{
		case '+': answer = numb1 + numb2; break;
		
		case '-': answer = numb1 - numb2; break;
		
		case '*': answer = numb1 * numb2; break;
			
		case '/': answer = numb1 / numb2; break;
			
		default: cout << "Invalid operator!"; break;
	
	} // end switch
	
	cout << "\nDo another?  (y/n): " << response;
        response = getche();
        cout << endl;
    
	} // end while
	
	return 0;
}
arthur44 (5)

Move the cout << "\nAnswer is: " << answer << endl; inside the case statments 
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case '+': answer = numb1 + numb2;
               cout << "\nAnswer is: " << answer << endl;
               break;
case '-': answer = numb1 - numb2;
              cout << "\nAnswer is: " << answer << endl;
	      break;

case '*': answer = numb1 * numb2;
               cout << "\nAnswer is: " << answer << endl;
               break;
case '/': answer = numb1 / numb2;
                    cout << "\nAnswer is: " << answer << endl;
                    break;
default: cout << "Invalid operator!"; break;
shadder (813)
or you could move your cout << "\nAnswer is: " << answer << endl; at the end...
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