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位域的規(guī)律題

時間:2024-10-01 18:51:26 資料大全 我要投稿
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位域的規(guī)律題

有無unsigned、a:1 a:2 a:4 a:8 a:16 a:32 以及用char的各值來試驗就可發(fā)現(xiàn)位域的規(guī)律,

位域的規(guī)律題

。

 #include <iostream>

  #include <windows.h>

  using namespace std;

  void main()

  {

  struct test

  {

  //在這里測試就可以發(fā)現(xiàn)其規(guī)律,有無unsigned、a:1 a:2 a:4 a:8 a:16 a:32 以及用char的各值來試驗就可發(fā)現(xiàn)位域的規(guī)律

  unsigned int a:8;

  };

  test t1;

  t1.a = 0;

  cout<<"十進制 -> 0: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 0: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 1;

  cout<<"十進制 -> 1: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 1: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 2;

  cout<<"十進制 -> 2: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 2: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 3;

  cout<<"十進制 -> 3: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 3: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 126;

  cout<<"十進制 -> 126: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 126: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 127;

  cout<<"十進制 -> 127: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 127: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 128;

  cout<<"十進制 -> 128: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 128: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 129;

  cout<<"十進制 -> 129: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 129: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 253;

  cout<<"十進制 -> 253: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 253: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 254;

  cout<<"十進制 -> 254: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 254: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 255;

  cout<<"十進制 -> 255: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 255: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 256;

  cout<<"十進制 -> 256: "<<dec<<t1.a<<endl;

  cout<<"十六進制-> 256: "<<hex<<t1.a<<endl;

  cout<<endl;

  t1.a = 257;

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