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The CICA Windows Explosion!
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5
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STRFILE.CPP
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1995-02-23
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// File from page 215 in "Thinking in C++" by Bruce Eckel
//////////////////////////////////////////////////
// From the compressed package ECKELT01.ZIP 2/21/95
// Copyright (c) Bruce Eckel, 1995
// Source code file from the book "Thinking in C++",
// Prentice Hall, 1995, ISBN: 0-13-917709-4
// All rights reserved EXCEPT as allowed by the following
// statements: You may freely use this file for your own
// work, including modifications and distribution in
// executable form only. You may copy and distribute this
// file, as long as it is only distributed in the complete
// (compressed) package with the other files from this
// book and you do not remove this copyright and notice.
// You may not distribute modified versions of the source
// code in this package. This package may be freely placed
// on bulletin boards, internet nodes, shareware disks and
// product vendor disks. You may not use this file in
// printed media without the express permission of the
// author. Bruce Eckel makes no
// representation about the suitability of this software
// for any purpose. It is provided "as is" without express
// or implied warranty of any kind. The entire risk as to
// the quality and performance of the software is with
// you. Should the software prove defective, you assume
// the cost of all necessary servicing, repair, or
// correction.
// If you think you've found an error, please
// email all modified files with loudly commented changes
// to: eckel@aol.com (please use the same
// address for non-code errors found in the book).
//////////////////////////////////////////////////
//: STRFILE.CPP -- Stream I/O with files
// The difference between get() & getline()
#include <fstream.h> // Includes iostream.h
#include <assert.h>
#define SZ 100 // Buffer size
main() {
char buf[SZ];
{
ifstream in("strfile.cpp"); // Read
assert(in); // Ensure successful open
ofstream out("strfile.out"); // Write
assert(out);
int i = 1; // Line counter
// A less-convenient approach for line input:
while(in.get(buf, SZ)) { // Leaves \n in input
in.get(); // Throw away next character (\n)
cout << buf << endl; // Must add \n
// File output just like standard I/O:
out << i++ << ": " << buf << endl;
}
} // Destructors close in & out
ifstream in("strfile.out");
assert(in);
// More convenient line input:
while(in.getline(buf, SZ)) { // Removes \n
char* cp = buf;
while(*cp != ':')
cp++;
cp += 2; // Past ": "
cout << cp << endl; // Must still add \n
}
}