Getting simple STL program to compile

[" Clark Sims " <clarksimsgnu AT my-Deja dot com>]

 OS) NT4 SP5
Cygwin ver) 20.1
GCC ver) 2.91.57
Watcom ver) 11.0b
STL) SGI port, 3.12.3

I wrote the attached program which uses, strings, vectors and the "Unix" 
function, getch. It compiled and ran correctly using the Watcom comiler, so
I am pretty sure that everything in the program is correct. I also copied most
of the syntax from Stroustrup's "The C++ Programming Language", 3rd edition,
chapters 20 & 21, so most (all?) of the functions and syntax for the STL 
should be correct.

I can't get the program to compile with Cygnus-GCC or Cygnus-G++. I have tried
the following command lines: 

gcc -mng-cygwin -o mypg mypg.cpp
g++ -mno-cygwin -o mypg mypg.cpp
g++ -mno-cygwin -o mypg mypg.cpp
gcc -mno-cygwin -o mypg -I//d/STLport-3.12.3/stl mypg.cpp 
g++ -mno-cygwin -o mypg -I//d/STLport-3.12.3/stl mypg.cpp 
gcc -mno-cygwin -o mypg -I//d/cygnus/include/g++-3 mypg.cpp 
g++ -mno-cygwin -o mypg -I//d/cygnus/include/g++-3 mypg.cpp 

None of these work.

Could someone show me how to get this program to compile?

Thanks in Advance,

Clark Sims



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#include <iostream.h>
#include <stdio.h>
#include <string>
#include <vector.h>
#include <conio.h>
 
class UsageError {};

void usage()
{
  cout << "usage: mypg [-p=25]" << endl;
  throw UsageError();
}

int main( int argc, const char* argv[])
{
   int p=25;
 
   if (argc > 1)
   {
      if (argc!=2 || memcmp( argv[1], "-p=", 3) != 0)
      {
         usage();
      }
      p = atol( argv[1]+3);
      if (p<=0)
      {
	 cout << "p = " << p << " must be > 0" << endl;
         usage();
      }
   }
  
   char c;
   string input;
   vector<string> pg(p);
   long i = 0;

   do {
      input = "";
      while( (c=cin.get())!='\n' && cin)
      {
         if (c != '\r')
	   input += c;
      }
  
      if (cin)
      {
         pg[i] = input;
         i++;
      }
    
      if (i == p || !cin)
      {
         long j;
         for (j=0;j<i;j++) {
	   cout << pg[j] << endl;
         }
	 cout.flush();
         i = 0;
         if (!cin) {
            fflush( NULL);
            getch();
         }
      }    
   } while (cin);
      
   return 0;
}

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