cin/cout 例子

cin 例子

int x，y; 
cin >> x; 

string s1, s2;
cout<<"请输入两个字符串：\n";
cin >> s1 >> s2;

char c;
cin >> c;

char c;
c = cin.get();

char buffer[80];  
    for(int k=0; k<10; k++)  
    {    cin>>buffer[k];      } 
     buffer[10]=‘\0’;
cin>>buffer; 	
cin.getline(buffer, 80, '\n');

cout 例子

#include <iomanip>

cout<<setw (8)<<'a'<<setw (8)<<'b'<<endl;
cout<<setfill ('*')<<setw (8)<<'a'<<setw (8)<<'b'<<endl;
cout<<setiosflags (ios::left)<<setfill ('*')<<setw (8)<<'a'<<setw (8)<<'b'<<endl;

double f=177/7.0;
cout<<f<<endl;

cout<<setprecision(3)<<f<<endl;

cout<<setiosflags (ios::fixed) <<setprecision(3)<<f<<endl;

cout<<setiosflags (ios::scientific) <<setprecision(3)<<f<<endl;