bvtest.cpp

来自「Thinking in C++ 2nd edition source code 」· C++ 代码 · 共 32 行

//: C07:Bvtest.cpp
// From Thinking in C++, 2nd Edition
// at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
//{L} Bitvect
// Testing the BitVector class
#include "Bitvect.h"

int main() {
  unsigned char b[] = {
    0x0f, 0xff, 0xf0,
    0xAA, 0x78, 0x11
  };
  BitVector bv1(b, sizeof b / sizeof *b),
    bv2("10010100111100101010001010010010101");
  bv1.print("bv1 before modification");
  for(int i = 36; i < bv1.bits(); i++)
    bv1.clear(i);
  bv1.print("bv1 after modification");
  bv2.print("bv2 before modification");
  for(int j=bv2.bits()-10; j<bv2.bits(); j++)
    bv2.clear(j);
  bv2.set(30);
  bv2.print("bv2 after modification");
  bv2.bits(bv2.bits() / 2);
  bv2.print("bv2 cut in half");
  bv2.bits(bv2.bits() + 10);
  bv2.print("bv2 grown by 10");
  BitVector bv3((unsigned char*)0);
} ///:~