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 int a=21;
7 cout.setf(ios::showbase);
8 cout<<"dec:"<<a<<endl;
9 cout.unsetf(ios::dec);
10 cout.setf(ios::hex);
11 cout<<"hex:"<<a<<endl;
12 cout.unsetf(ios::hex);
13 cout.setf(ios::oct);
14 cout<<"oct:"<<a<<endl;
15 cout.unsetf(ios::oct);
16 char *pt="China";
17 cout.width(10);
18 cout<<pt<<endl;
19 cout.width(10);
20 cout.fill('*');
21 cout<<pt<<endl;
22 double pi=22.0/7.0;
23 cout.setf(ios::scientific);
24 cout<<"pi=";
25 cout.width(14);
26 cout.width(14);
27 cout<<pi<<endl;
28 cout.unsetf(ios::scientific);
29 cout.setf(ios::fixed);
30 cout.width(12);
31 cout.setf(ios::showpos);
32 cout.setf(ios::internal);
33 cout.precision(6);
34 cout<<pi<<endl;
35 return 0;
36 }
