cout: fill() : cout « Development « C++ Tutorial

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#include <iostream> 
using namespace std; 
 
int main() 
{ 
  cout.setf(ios::showpos); 
  cout.setf(ios::scientific); 
  cout << 123 << " " << 123.23 << "\n"; 
 
 
  cout.fill('#');  // fill using # 
  cout.width(10);  // in a field of 10 characters 
  cout << 123 << " "; 
  cout.width(10);  // set width to 10 
  cout << 123.23; 
 
  return 0; 
}

+123 +1.232300e+002
######+123 +1.232300e+002