int

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#include <iostream>#include <cstdlib>#include <iomanip>using namespace std;union A{int i;char x[4];} test;int main(){cout<<"a[0] addr: "<<(int)&test.x[0]<<"\na[1] addr: "<<(int)&test.x[1]<<"\na[2] addr: "<<(int)&test.x[2]<<"\na[3] addr: "<<(int)&test.x[3]<<endl;test.x[0]=0;test.x[1]=1;test.x[2]=2;test.x[3]=3;cout<<hex<<setw(11)<<test.i<<endl;test.i=test.i>>4;//右移4位:这样的话,是不是左右移动相当麻烦?cout<<setw(11)<<test.i<<endl;cout<<"a[0]: "<<setw(5)<<(int)test.x[0]<<"\na[1]: "<<setw(5)<<(int)test.x[1]<<"\na[2]: "<<setw(5)<<(int)test.x[2]<<"\na[3]: "<<setw(5)<<(int)test.x[3]<<endl;test.i=test.i>>4;//右移4位cout<<setw(11)<<test.i<<endl;cout<<"a[0]: "<<setw(5)<<(int)test.x[0]<<"\na[1]: "<<setw(5)<<(int)test.x[1]<<"\na[2]: "<<setw(5)<<(int)test.x[2]<<"\na[3]: "<<setw(5)<<(int)test.x[3]<<endl;system("pause");return 0;}//int类型的内存模式
                                             
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