stackt.cpp

来自「Think in C++ 第二版源码」· C++ 代码 · 共 40 行

//: C16:Stackt.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Test simple stack template
#include "Stackt.h"
#include "../require.h"
#include <iostream>
using namespace std;

// For interest, generate Fibonacci numbers:
int fibonacci(int n) {
  const int sz = 100;
  require(n < sz);
  static int f[sz]; // Initialized to zero
  f[0] = f[1] = 1;
  // Scan for unfilled array elements:
  int i;
  for(i = 0; i < sz; i++)
    if(f[i] == 0) break;
  while(i <= n) {
    f[i] = f[i-1] + f[i-2];
    i++;
  }
  return f[n];
}

int main() {
  Stackt<int> is;
  for(int i = 0; i < 20; i++)
    is.push(fibonacci(i));
  // Traverse with an iterator:
  StacktIter<int> it(is);
  for(int j = 0; j < 20; j++)
    cout << it++ << endl;
  for(int k = 0; k < 20; k++)
    cout << is.pop() << endl;
} ///:~