// labifelse.cpp  for CPS 171 Practice with if-then-else's   Updated Fall 02
// (Your name)
#include 
#include 
#include 
using namespace std;

int main()
{	
    cout << "Your name" << endl;					
					// declare variables here

                    // declare input file and open it
    ifstream infile;
    infile.open("labifelse.dat");
    if(!infile)
    {	
        cout << "Cannot open input file\n";
        return 1;
    }
                 // get first number from the data file
                 // use a while loop until end of file
    infile ...
    while ( ... )
    {
                 // echo data here

                 // test for negative, zero or positive

                 // get next number
       infile ...
    }
    return 0;
}