macros-in-c-5.cpp

#include <iostream>

using namespace std;

void printError(int errorCode, string msg = "No message")
{
	cerr << "Error code: " << errorCode << " (" << msg << ")\n";
}

int main(int argc, char *argv[]) 
{
	printError(9, "Bad alloc");
	printError(8);
}