[c++] C++ Fatal Error LNK1120: 1 unresolved externals

What is causing this error? I google'd it and first few solutions I found were that something was wrong with the library and the main function but both seem to be fine in my problem, I even retyped both! What could be causing this?

This might be helpful:

MSVCRTD.lib(crtexew.obj) : error LNK2019: unresolved external symbol WinMain@16 referenced in function __tmainCRTStartup

#include <iostream>
using namespace std;
int main()
{
    const double A = 15.0, 
                 B = 12.0, 
                 C = 9.0;
    double aTotal, bTotal, cTotal, total;
    int numSold;

    cout << "Enter The Number of Class A Tickets Sold: ";
    cin >> numSold;
    aTotal = numSold * A;

    cout << "Enter The Number of Class B Tickets Sold: ";
    cin >> numSold;
    bTotal = numSold * B;

    cout << "Enter The Number of Class C Tickets Sold: ";
    cin >> numSold;
    cTotal = numSold * C;

    total = aTotal + bTotal + cTotal;

    cout << "Income Generated" << endl;
    cout << "From Class A Seats $" << aTotal << endl;
    cout << "From Class B Seats $" << bTotal << endl;
    cout << "From Class C Seats $" << cTotal << endl;
    cout << "-----------------------" << endl;
    cout << "Total Income: " << total << endl;

    return 0;
}

My problem was int Main() instead of int main()

good luck

I have faced this particular error when I didn't defined the main() function. Check if the main() function exists or check the name of the function letter by letter as Timothy described above or check if the file where the main function is located is included to your project.

In my particular case, this error error was happening because the file which I've added wasn't referenced at .vcproj file.

In my case, the argument type was different in the header file and .cpp file. In the header file the type was std::wstring and in the .cpp file it was LPCWSTR.

You must reference it. To do this, open the shortcut menu for the project in Solution Explorer, and then choose References. In the Property Pages dialog box, expand the Common Properties node, select Framework and References, and then choose the Add New Reference button.

Well it seems that you are missing a reference to some library. I had the similar error solved it by adding a reference to the #pragma comment(lib, "windowscodecs.lib")

I incurred this error once.

It turns out I had named my program ProgramMame.ccp instead of ProgramName.cpp

easy to do ...

Hope this may help