Hi guys,
i have one question, when i type
using namespace std;
at top of my program my compiler gives some error
especially syntax error!
my compiler is Borland C++ v.5
for example simple code:

Shouldn't use void main. getch() isn't a great way of stopping the program. iostream.h is non-standard. use iostream:

C++ Syntax (Toggle Plain Text)

#include <iostream>
 
using namespace std;
 
int main( void ) {
 
  std::cin.ignore();
  return 0;
}

#include <iostream> using namespace std; int main( void ) { std::cin.ignore(); return 0; }

When using the old headers with .h extension you don't use "using namespace std". Check to see if your compiler supports the new headers without an extension and use those instead. The old files are out-of-date and will cause lots of other problems if you attempt to use current coding practices.