Fundamentals of Programming using C++ by Baldwin

The main function for Formatting01

The main function for the program named Formatting01 begins in Listing 2. (Note continuation of statement on next line.)

int main(){
  cout << setprecision(2) << fixed 
                             << showpoint;

Listing 2

Listing 2 uses manipulators (boldface) to prepare the system to:

Print floating-point data with two digits to the right of the decimal point.
Use fixed instead of scientific display format for floating-point values.
Show the decimal point. (Because the display format has two digits to the right of the decimal point, the decimal point would be displayed in this case even in the absence of this manipulator.)