Show decimal point field when displaying double and set filler : double « Data Types « C++ Tutorial

1. C++ Tutorial
2. Data Types
3. double

#include <iostream>
#include <iomanip>

using namespace std;

int main(int argc, char** argv)
{

  double dbl = 1.452;
  double dbl2 = 5;

  cout << "This should be 5: " << setw(2) << noshowpoint << dbl2 << endl;
  cout << "This should be @@1.452: " << setw(7) << setfill('@') << dbl << endl;
}