Custom error function C++

Is there a way to get the line the code is being executed on?

For example:

int death() {
  cout << "An error has occurred on line " << line << endl;
  exit(128);
}

Then if I call death() function on line 64 it tells me that the error occurred on line 64.

EDIT: Most people seem to be telling me to use the __LINE__ macro. I know you can do that:

#define DEATH(message) death(__LINE__, message)

where

int death(int line, string message) {
  cout << "An error has occurred at line << line << endl;
}

But I'm thinking of using it in such a way:

string readFile(string file) {
  string str;
  ifstream stream(file);
  if (!stream) { death(); } //if this is line 23, it prints line 23
  stream >> str;
  stream.close();
  return str;
}

//instead of printing line 64 if readFile() is executed on line 64

And using the __LINE__ macro alone only returns the line at which the death() function was executed. In other words, if I execute readFile() at line 64, I want death() to print line 64, not the line at which it was defined inside the readFile() function.