Actually, I think that should be

#include "stdafx.h" 

because the stdafx.h file should be in the project directory, not the standard INCLUDE directories (I believe).


People who can''t do shit, talk.
-Dwight Yorke, Manchester United

Thanks, deadlinegrunt. Yeah, I''ve had to clean those VC projects, and I often just turn off the PCHs.

minority: You''re trying to print out an object/data type that does not define the << operator. It goes like this: when you issue the instruction "cout << x;", you''re passing the value x to the cout object (cout is an object, not a function, and it encapsulates the standard output device). The object you are passing (x) is given to cout through the insertion operator, <<. operator<< () is defined for all standard data types, which is why we can cout << x if x is an int, char, bool, long, etc. However, if is of of type MyClass, then I must define that operator myself.

  class MyClass{private:  float m[4][4]; // MyClass is a 4x4 matrixpublic:  MyClass() {...}  ~MyClass() {...}  // other functions  // .  // .  //*** operator<<  friend ostream &operator<< ( ostream &os, MyClass &m );};// Note that the function takes the stream object and your// object as its parametersostream &operator<< ( ostream &os, MyClass &m ){  for( int i = 0; i < 4; i++ )  {    for( int j = 0; j < 4; j++ )    {       os << m[i][j] << " ";   // insert each element and then a space    }  }  return os;}  

Because the operator<< () function is a friend function, it has access to private data member in your class (MyClass), and due to the nature of operator overloading the syntax

cout << m; 

is properly interpreted as

operator<< (cout, m); 

You must always define your insertion (<<) and extraction (>>)operators in terms of basic data types, for which the operators are defined as part of the standard library.