十进制

 1 #include <iostream>
 2 
 3 /* run this program using the console pauser or add your own getch, system("pause") or input loop */
 4 using namespace std;
 5 int main(int argc, char** argv) {
 6     
 7         //声明变量，并初始化
 8     int a=010,b=10,c=0X10; 
 9 
10     //以十进制形式显示数据
11     cout<<"DEC:";
12     cout<<" a="<<a;
13     cout<<" b="<<b;
14     cout<<" c="<<c<<endl; 
15     
16     //以八进制形式显示数据
17     cout<<"OCT:";
18     cout<<oct;             //指定八进制输出
19     cout<<" a="<<a;
20     cout<<" b="<<b;
21     cout<<" c="<<c<<endl;  
22     
23     //以十六进制形式显示数据
24     cout<<"HEX:";
25     cout<<hex;            //指定十六进制输出
26     cout<<" a="<<a;
27     cout<<" b="<<b;
28     cout<<" c="<<c<<endl;  
29 
30     //八、十和十六进制数混合运算并输出
31     cout<<"a+b+c=";
32     cout<<dec;            //恢复十进制输出
33     cout<<a+b+c<<endl;
34 
35     //测试八、十和十六进制输入
36     cout<<"DEC:a="; cin>>a;
37     cout<<"OCT:b="; cin>>b;
38     cout<<"HEX:a="; cin>>c;
39     cout<<"DEC:"<<dec<<endl;            //指定十进制输出
40     cout<<"a="<<a<<endl;
41     cout<<"b="<<b<<endl;
42     cout<<"c="<<c<<endl;
43     return 0;
44 }