Ambiguous Error

[dgdaniel23]

I have a simple code but a lot of the couts say they are ambiguous. Any help is appreciated, I don't know what is causing this. I am running this on Microsoft Visual Studio 2013.

 #include <iostream>

using namespace std;
int main()
{
	//declaring variables
	double  usDollar = 1;
	double	canDollar = .9813;
	double	euro = .757;
	double  indRup = 52.53;
	double	japYen = 80.92;
	double	mexPeso = 13.1544;
	double	britPound = .6178;

	int option;
	char currency;
	double userInput;

	system("color 81");

	do 
	{
		cout << "1. Convert your currency to US Dollars." << endl;
		cout << "2. Convert US Dollars to other currency.\n" << endl;

		while ((cout << "Please enter the number of the task you would like to perform: \n")) && !((cin >> option))
		{
			cout << "Thats not a number\n\n";
			cin.clear();
			cin.ignore(numeric_limits<streamsize>::max(), '\n');
		}

		if (option == 1)
		{

			cout << "(C) = Canadian Dollar" << endl;
			cout << "(E) = Euro " << endl;
			cout << "(I) = Indian Rupee" << endl;
			cout << "(J) = Japanese Yen" << endl;
			cout << "(M) = Mexican Peso" << endl;
			cout << "(B) = British Pound" << endl;

			cout << "\nPlease type the letter that corresponds with the currency you \nwant to exchange:" << "\n";
			cin >> currency;

			switch (toupper(currency))
			{
			case 'C':
				cout << "Please ener the amount of Canadian Dollars you would like to exchange:" << endl;
				cin >> userInput;
				cout << "\nYou now have " << userInput / canDollar << " US Dollars." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			case 'E':
				cout << "Please enter the amount of Euros you would like to exchange: " << endl;
				cin >> userInput;
				cout << "You now have " << userInput / euro << " US Dollars." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			case 'I':
				cout << "Please enter the amount of Indian Rupees you would like to exchange: " << endl;
				cin >> userInput;
				cout << "You now have " << userInput / indRup << " US Dollars." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			case 'J':
				cout << "Please enter the amount of Japanese Yen you would like to exchange: " << endl;
				cin >> userInput;
				cout << "You now have " << userInput / japYen << " US Dollars." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			case 'M':
				cout << "Please enter the amount of Mexican Pesos you would like to exchange: " << endl;
				cin >> userInput;
				cout << "You now have " << userInput / mexPeso << " US Dollars." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			case 'B':
				cout << "Please enter the amount of British Pounds you would like to exchange: " << endl;
				cin >> userInput;
				cout << "You now have " << userInput / britPound << " US Dollars." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			default: system("color 4f");
				cout << "\nInvalid Data" << endl;
				system("color 81");
			}
		}

		if (option == 2)
		{
			cout << "(C) = Canadian Dollar" << endl;
			cout << "(E) = Euro " << endl;
			cout << "(I) = Indian Rupee" << endl;
			cout << "(J) = Japanese Yen" << endl;
			cout << "(M) = Mexican Peso" << endl;
			cout << "(B) = British Pound" << endl;

			cout << "\n\nPlease type the letter that corresponds with the currency you wish to \nexchange to:" << endl;
			cin >> currency;

			switch (toupper(currency))
			{
			case 'C':
				cout << "Please ener the amount of U.S. Dollars you would like to exchange:" << endl;
				cin >> userInput;
				cout << "You now have " << userInput * canDollar << " Canadian Dollars." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			case 'E': cout << "Please enter the amount of U.S. Dollars you would like to exchange: " << endl;
				cin >> userInput;
				cout << "You now have " << userInput * euro << " Euros." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			case 'I': cout << "Please enter the amount of U.S. Dollars you would like to exchange: " << endl;
				cin >> userInput;
				cout << "You now have " << userInput * indRup << " Indian Rupees." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			case 'J': cout << "Please enter the amount of U.S. Dollars you would like to exchange: " << endl;
				cin >> userInput;
				cout << "You now have " << userInput * japYen << " Japanese Yen." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			case 'M': cout << "Please enter the amount of U.S. Dollars you would like to exchange: " << endl;
				cin >> userInput;
				cout << "You now have " << userInput * mexPeso << " Mexican Pesos." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			case 'B': cout << "Please enter the amount of U.S. Dollars you would like to exchange: " << endl;
				cin >> userInput;
				cout << "You now have " << userInput * britPound << " British Pounds." << endl;
				cout << "--------------------------------------------------------------" << endl;
				break;
			default: system("color 4f");
				cout << "\nInvalid Data" << endl;
				system("color 81");
			}
		}

		else if (option < 1 || option > 2)
		{
			cout << "Invalid data " << endl;
			cout << "------------------------------------------------------------------" << endl;
		}
	} while (option < 1 || option > 2);

	system("pause");
	return 0;
}

[dhayden]

I'm using mingw and was able to compile this after adding #include <limits> and changing line 26 to:

while ((cout << "Please enter the number of the task you would like to perform: \n")
               && !(cin >> option)) {

[dgdaniel23]

That worked for me as well! thank you so much!!