1 #include<iostream>
 2 #include<fstream>
 3 //#include<iomanip>
 4 using namespace std;
 5 int main()
 6 {
 7     
 8     /*cout << " mor"<<setw(4)<<10<<endl;和下面效果一样
 9     fd和10之间空2格*/
10     
11     cout << "fd";
12     cout.width(4);
13     cout << 10<<endl;
14     system("pause");
15 }