c13-2.cpp

谭浩强C程序设计习题答案

#include <iostream>
#include <iomanip>
using namespace std;
int main()
{int a;
 cout<<"input a:";
 cin>>a;
 cout<<"dec:"<<dec<<a<<endl;
 cout<<"hex:"<<hex<<a<<endl;
 cout<<"oct:"<<setbase(8)<<a<<endl;
 char *pt="China";
 cout<<setw(10)<<pt<<endl;
 cout<<setfill('*')<<setw(10)<<pt<<endl;
 double pi=22.0/7.0;
 cout<<setiosflags(ios::scientific)<<setprecision(8);
 cout<<"pi="<<pi<<endl;
 cout<<"pi="<<setprecision(4)<<pi<<endl;
 cout<<"pi="<<setiosflags(ios::fixed)<<pi<<endl;
 return 0;
}