程式設計講義----PGM10-06.cpp

[Kenad (..大拇指腫歪歪..)]

#include <fstream.h>
#include <stdlib.h>

const int MAXCHARS = 21;
char fname[MAXCHARS] = "list.dat";  // here is the file we are working with

void in_out(ofstream&);    // function prototype

int main()
{

  ofstream out_file;

  out_file.open(fname);
  if (out_file.fail())   // check for a successful open
  {
    cout << "\nThe output file " << fname << " was not successfully opened"
         << endl;
    exit(1);
  }

  in_out(out_file);  // call the function

  return 0;
}

void in_out(ofstream& file_out)
{
  const int LINELEN = 80;  // longest length of a line of text
  const int NUMLINES = 5;  // number of lines of text
  int count;
  char line[LINELEN];  // enough storage for one line of text

  cout << "Please enter five lines of text:" << endl;
  for (count = 0; count < NUMLINES; count++)
  {
    cin.getline(line,LINELEN,'\n');
    file_out << line << endl;
  }

  return;
}

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