输入一个十进制整数,数据范围要求在0~65535(无符号短整型),要求将这个整数的二进制数的最后一位变成0(如果这个整数的最后一位已经是0,就不用变了)。
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
1 #include<iostream> 2 #include<iomanip> 3 using namespace std; 4 void f(unsigned short int m) 5 { 6 int i; 7 int g[100]={0}; 8 int t=0; 9 while(m!=0) 10 { 11 int x=m%2; 12 g[t++]=x; 13 m=m/2; 14 } 15 for(i=1;i<=16-t;i++) 16 cout<<0; 17 for(i=t-1;i>=0;i--) 18 cout<<g[i]; 19 cout<<endl; 20 } 21 int main() 22 { 23 unsigned short int b,c; 24 cout<<"请输入b的值(c的初始值是1):"; 25 cin>>b; 26 unsigned short int t=b; 27 c=1; 28 cout<<endl; 29 cout<<"b所占的字节数是:"<<sizeof(b)<<endl; 30 cout<<"c所占的字节数是:"<<sizeof(c)<<endl; 31 cout<<endl; 32 cout<<"b的初始二进制数:"; 33 f(b); 34 cout<<"c的初始二进制数:"; 35 f(c); 36 cout<<endl; 37 c=~c; 38 cout<<"c按位求反(c=~c)后的十进制数是:"; 39 cout<<c<<endl; 40 cout<<"b此时的十进制数是:"; 41 cout<<b<<endl; 42 cout<<endl; 43 cout<<"c按位求反后的二进制数:"; 44 f(c); 45 cout<<endl<<"经过运算:c=c&b 以后:"<<endl; 46 cout<<endl; 47 cout<<"运算后的b二进制数"; 48 b=c&b; 49 f(b); 50 cout<<endl; 51 cout<<"最终结果是:"; 52 cout<<endl<<endl; 53 cout<<"c的十进制数是:"<<c<<endl; 54 cout<<"b的十进制数是:"<<b<<endl; 55 cout<<endl; 56 cout<<"运算前的b的十进制数是:"<<t<<endl; 57 cout<<"运算后的b的十进制数是:"<<b<<endl; 58 cout<<"运算前的b的二进制数是:"; 59 f(t); 60 cout<<"运算后的b的二进制数是:"; 61 f(b); 62 return 0; 63 }