home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The CICA Windows Explosion!
/
The CICA Windows Explosion! - Disc 2.iso
/
programr
/
eckelt01.zip
/
5
/
EFFECTOR.CPP
< prev
next >
Wrap
C/C++ Source or Header
|
1995-02-23
|
3KB
|
94 lines
// File from page 248 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).
//////////////////////////////////////////////////
//: EFFECTOR.CPP -- Jerry Schwarz's "effectors"
#include<iostream.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <limits.h> // ULONG_MAX
// Put out a portion of a string:
class fixw {
char* s;
public:
fixw(const char* S, int width);
~fixw();
friend ostream& operator<<(ostream&, fixw&);
};
fixw::fixw(const char* S, int width) {
s = (char*)malloc(width + 1);
assert(s);
strncpy(s, S, width);
s[width] = 0; // Null-terminate
}
fixw::~fixw() { free(s); }
ostream& operator<<(ostream& os, fixw& fw) {
return os << fw.s;
}
// Print a number in binary:
typedef unsigned long ulong;
class bin {
ulong n;
public:
bin(ulong N);
friend ostream& operator<<(ostream&, bin&);
};
bin::bin(ulong N) { n = N; }
ostream& operator<<(ostream& os, bin& b) {
ulong bit = ~(ULONG_MAX >> 1); // Top bit set
while(bit) {
os << (b.n & bit ? '1' : '0');
bit >>= 1;
}
return os;
}
main() {
char* string =
"Things that make us happy, make us wise";
for(int i = 1; i <= strlen(string); i++)
cout << fixw(string, i) << endl;
ulong x = 0xFEDCBA98UL;
ulong y = 0x76543210UL;
cout << "x in binary: " << bin(x) << endl;
cout << "y in binary: " << bin(y) << endl;
}