// A simple example of a program using an end-of-file loop for input: 
// 
#include <fstream.h>                           // for file stream functions 
#include <iomanip.h>                           // for i/o manipulators
 

int main() { 

ifstream inStream;                             // declare file stream variables 
ofstream outStream; 

int Int1, NumLines = 0;                        // declare other variables 
float Float1, Float2; 

inStream.open("readme.dat");         // open files -- this associates DOS
outStream.open("writeme.dat");       // file names with the stream variables 

// Print header info to output file: 
outStream << "Here comes some output:" << endl << endl; 

// Set up for floating point output: 
outStream.setf(ios::fixed, ios::floatfield); 
outStream.setf(ios::showpoint); 

// Read first line of data from input file (priming read): 
inStream >> Float1 >> Float2 >> Int1; 

// Process and read until there's no more data: 
while (inStream) { 

   NumLines++;                             // Count lines read. 

   outStream << " Float1 = " 
             << setw(10) << setprecision(2) << Float1 << endl; 
   outStream << " Float2 = " 
             << setw(10) << setprecision(2) << Float2 << endl; 
   outStream << " Int1 = " 
             << setw(10) << Int1 << endl << endl; 

   // Read next line of input: 
   inStream >> Float1 >> Float2 >> Int1; 
}  // End of While loop 

outStream << " Read " << setw(3) << NumLines; 
outStream << " lines of input data" << endl; 

// Close files. 
inStream.close(); 
outStream.close(); 

return 0; 
}