Thread: Compiler Error

  1. #1
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    Compiler Error

    Hi all....so I'm a C++ noob and I'm trying to test some things I've learned, but am getting a compiler error message I have no clue how to fix.

    Here's the error message:

    1>MSVCRTD.lib(crtexew.obj) : error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup
    1>P:\C++\Projects\General_Template\Debug\General_T emplate.exe : fatal error LNK1120: 1 unresolved externals
    here is the code being compiled in Visual C++ 2008 Express Edition

    Code:
    // Program1 - A "Sandbox" of sorts
    // to practice C++ in 
    #include <cstdio>
    #include <cstdlib>
    #include <iostream>
    using namespace std;
    
    //Prototype Declarations
    void WelcomeMessage(void);
    void ExitMessage(void);
    
    int main(int nNumberofArgs, char* pszArgs[])
    {
    	// Display greeting
    	void WelcomeMessage(void);
    	
    	//woo more code goes here
    	
    	
    	// Display Exit Message
    	void ExitMessage(void);
    	
    	system("PAUSE");
    	return 0;
    }
    
    void WelcomeMessage(void)
    {
    	cout << "Welcome, this is my first practical program.\n"
    		 << "IDFK what it does quite yet, but we'll see \n"
    		 << "Have a jolly good day, man \n"
    		 << endl;
    	return;
    }
    
    void ExitMessage(void)
    {
    	cout << "Later, dude! \n"
    		 << endl;
    	return;
    }

    I appreciate any help.

    Cheers

  2. #2
    and the Hat of Guessing tabstop's Avatar
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    14,336
    You need to set up your project to make a command line program, not a Windows program.

  3. #3
    Guest Sebastiani's Avatar
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    Location
    Waterloo, Texas
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    5,708
    >> void ExitMessage(void);

    You don't call a function the same way it's defined.

    Code:
    int add( int lhs, int rhs )
    {
    	return lhs + rhs;
    }
    
    int main( void )
    {
    	int value = add( 3, 4 );
    }
    Code:
    #include <cmath>
    #include <complex>
    bool euler_flip(bool value)
    {
        return std::pow
        (
            std::complex<float>(std::exp(1.0)), 
            std::complex<float>(0, 1) 
            * std::complex<float>(std::atan(1.0)
            *(1 << (value + 2)))
        ).real() < 0;
    }

  4. #4
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    Between the two of you I figured it out.
    Thanks

  5. #5
    Registered User hk_mp5kpdw's Avatar
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    Quote Originally Posted by Chasethesunset View Post
    Hi all....so I'm a C++ noob and I'm trying to test some things I've learned, but am getting a compiler error message I have no clue how to fix.

    Here's the error message:

    1>MSVCRTD.lib(crtexew.obj) : error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup
    1>P:\C++\Projects\General_Template\Debug\General_ T emplate.exe : fatal error LNK1120: 1 unresolved externals
    Not that it really matters that much, but that's a linker error, not a compiler error.
    "Owners of dogs will have noticed that, if you provide them with food and water and shelter and affection, they will think you are god. Whereas owners of cats are compelled to realize that, if you provide them with food and water and shelter and affection, they draw the conclusion that they are gods."
    -Christopher Hitchens

  6. #6
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    Quote Originally Posted by hk_mp5kpdw View Post
    Not that it really matters that much, but that's a linker error, not a compiler error.
    Oh well, that's good to know anyways. I just called it a comp error cause I got it when I built the solution.

    Thanks again for the help.

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