[RESOLVED] Linking error

[eranga262154]

I want a code that open a text file and able to write few text on it. Here is the code I have written.

#include <iostream>
#include <fstream>

using namespace std;

int main()
{
	ofstream file;
	file.open ("example.txt");

	if(file.is_open())
		{
			file << "Write a text line";
            		file.close();
		}
	else
		{
			file << "Unable to wirte text";
		}
	return 0;
}

When I compiled it, gives the following error.

Compiling...
rbf.cpp
Linking...
LIBCD.lib(wincrt0.obj) : error LNK2019: unresolved external symbol _WinMain@16 referenced in function _WinMainCRTStartup
Debug/ReadFile.exe : fatal error LNK1120: 1 unresolved externals

What's wrong there. Can you guys help me.

[chemicalNova]

It appears you've created a Win32 application, and haven't specified the correct entrypoint.

An entrypoint, is where your code begins its main execution (hence, the function name "main"). Basic console applications, use this:

int main()
{
    return 0;
}

Win32 applications however, need to pass some information into the entrypoint, like this:

int WINAPI WinMain (HINSTANCE hThisInstance, HINSTANCE hPrevInstance, LPSTR lpszArgument, int nFunsterStil)
{

}

Make sure you take note of what the tutorials say.

chem

[eranga262154]

If I replace my code with your given, is it ok.

By the way, I refer the following tutorial to test this.

http://www.cplusplus.com/doc/tutorial/files.html

[chemicalNova]

That tutorial assumes you're writing a console application, or, at the very least, an application that can run with the entrypoint "main".

Make sure, before you put any code anywhere, that you have created a Console Application. At the moment, you have created a Windows Application, and tried to put 'console code' inside it.

chem

[eranga262154]

Ok, thanks. I'll try it.