《C++捷徑教程》讀書筆記–Chapter 18–C++的I/O系統–7-11

//--《C++捷徑教程》讀書筆記--Chapter 18--C++的I/O系統
//--Chapter 18--C++的I/O系統
//--10/15/2006 Sun.
//--Computer Lab
//--Liwei

//說明操控符I/O--7
#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
 cout<<setprecision(2)<<1000.243<<endl<<ends<<"aaa"<<endl;
 cout<<setw(20)<<"hello xwlee."<<endl;

 return 0;
}

//說明操控符I/O--8
#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
 cout<<setiosflags(ios::showpos);
 cout<<setiosflags(ios::scientific);
 cout<<123<<" "<<123.23<<endl;

 return 0;
}

 

//說明操控符I/O--9
#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
 char s[80];
 cin>>ws>>s;
 cout<<s<<endl;

 return 0;
}

 

//說明操控符I/O--10
#include <iostream>
#include <iomanip>
using namespace std;

ostream &setup(ostream &stream)
{
 stream.setf(ios::right);
 stream<<setw(10)<<setfill('$');
 return stream;
}

int main()
{
 cout<<10<<endl<<setup<<10<<endl;
 return 0;
}

 

//說明操控符I/O--11
#include <iostream>
#include <iomanip>
using namespace std;

istream &prompt(istream &stream)
{
 cin>>hex;
 cout<<"Enter number using hex format:";
 return stream;
}

int main()
{
    int i;
 cin>>prompt>>i;
 cout<<i;

 return 0;
}