How to insert preprocessor value in a vector<int>?

Question

#define HEADER = 5
int _tmain(int argc, _TCHAR* argv[])
{
  vector<int> v;
  v.push_back(HEADER);
  return 0;
}  

why this code gives me a syntex error ?
as far as i preprocessor get treated like int.

Answer 1

#define HEADER = 5 replaces HEADER with = 5
You want #define HEADER 5 without =

Side note, don´t use non-standard _tmain.

#include <vector>  
#define HEADER 5
int main(int argc, char* argv[])
{
  std::vector<int> v;
  v.push_back(HEADER);
  return 0;
}  

compiles without syntax errors.