cout.setf(ios_base::fixed,ios_base::floatfield)

This line of code sets the floating-point output format to fixed-point. This means that any floating-point numbers that are outputted using the "cout" object will be displayed with a fixed number of decimal places. The number of decimal places will be determined by the precision value set using the "precision" method. This format is useful when exact precision is needed, such as when working with financial calculations.