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SSTACK.CPP
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1995-02-23
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86 lines
// File from page 292 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).
//////////////////////////////////////////////////
//: SSTACK.CPP -- Enums inside classes
#include <string.h>
#include <iostream.h>
class StringStack {
enum { size = 100 };
const char* stack[size];
int index;
public:
StringStack();
void push(const char* s);
const char* pop();
};
StringStack::StringStack() : index(0) {
memset(stack, 0, size * sizeof(char*));
}
void StringStack::push(const char* s) {
if(index < size)
stack[index++] = s;
}
const char* StringStack::pop() {
if(index > 0) {
const char* rv = stack[--index];
stack[index] = 0;
return rv;
}
return 0;
}
const char* iceCream[] = {
"pralines & cream",
"fudge ripple",
"jamocha almond fudge",
"wild mountain blackberry",
"raspberry sorbet",
"lemon swirl",
"rocky road",
"deep chocolate fudge"
};
const ICsz = sizeof iceCream/sizeof *iceCream;
main() {
StringStack SS;
for(int i = 0; i < ICsz; i++)
SS.push(iceCream[i]);
const char* cp;
while((cp = SS.pop()) != 0)
cout << cp << endl;
}