23. Field Width

• Manipulator std::setw( n ) determines minimum output width n.

• Requires header

  
      #include <iomanip>
  
  

• If output is shorter than the field width n, the output is padded with fill characters.

  
      #include <iostream>
      #include <iomanip>
      using namespace std;
      int main () {
          cout << setw( 40 ) << "Hello";
          return 0;
      }
      /*
      Output:
                                       Hello
      */