Suppress Compiler Warning using #pragma

Ocassionally the compiler can throw out warnings which may be informative to you but you do not want others to see. You can use a #pragma directive to suppress the warnings. An example of the code below:

//Program tested on Microsoft Visual Studio 2008 - Zahid Ghadialy

//This example shows how to suppress warnings using #pragma

#include<iostream>



using namespace std;



class error

{

public:

  error(string s)

  {

    info = s;

  }

private:

  error();

  string info;

};



#pragma warning( disable : 4290 )



int someFunc(void) throw (error)

{

  return 1;

}



#pragma warning( default : 4290 )



int someOtherFunc(void) throw (error)

{

  return 1;

}



int main()

{



  return 0;

}

Here, for 'someOtherFunc', the compiler will generate a warning:

warning C4290: C++ exception specification ignored except to indicate a function is not __declspec(nothrow)

but a similar warning for 'someFunc' wont be generated because we have already suppressed it using the #pragma.