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位域的規(guī)律題
有無(wú)unsigned、a:1 a:2 a:4 a:8 a:16 a:32 以及用char的各值來(lái)試驗(yàn)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(cè)試就可以發(fā)現(xiàn)其規(guī)律，有無(wú)unsigned、a:1 a:2 a:4 a:8 a:16 a:32 以及用char的各值來(lái)試驗(yàn)就可發(fā)現(xiàn)位域的規(guī)律
unsigned int a:8;
};
test t1;
t1.a = 0;
cout<<"十進(jìn)制 -> 0: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 0: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 1;
cout<<"十進(jìn)制 -> 1: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 1: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 2;
cout<<"十進(jìn)制 -> 2: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 2: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 3;
cout<<"十進(jìn)制 -> 3: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 3: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 126;
cout<<"十進(jìn)制 -> 126: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 126: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 127;
cout<<"十進(jìn)制 -> 127: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 127: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 128;
cout<<"十進(jìn)制 -> 128: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 128: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 129;
cout<<"十進(jìn)制 -> 129: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 129: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 253;
cout<<"十進(jìn)制 -> 253: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 253: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 254;
cout<<"十進(jìn)制 -> 254: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 254: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 255;
cout<<"十進(jìn)制 -> 255: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 255: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 256;
cout<<"十進(jìn)制 -> 256: "<<dec<<t1.a<<endl;
cout<<"十六進(jìn)制-> 256: "<<hex<<t1.a<<endl;
cout<<endl;
t1.a = 257;
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