Show two digits after decimal point in c++ [duplicate]

Question

Similar topic is already discussed in the forum. But I have some different problem in following code:

double total; cin >> total; cout << fixed << setprecision(2) << total; 

If I give input as 100.00 then program prints just 100 but not 100.00

How can I print 100.00?

Answer 1

cout << fixed << setprecision(2) << total; 

setprecision specifies the minimum precision. So

cout << setprecision (2) << 1.2;  

will print 1.2

fixed says that there will be a fixed number of decimal digits after the decimal point

cout << setprecision (2) << fixed << 1.2; 

will print 1.20

Answer 2

It is possible to print a 15 decimal number in C++ using the following:

#include <iomanip> #include <iostream>  cout << fixed << setprecision(15) << " The Real_Pi is: " << real_pi << endl; cout << fixed << setprecision(15) << " My Result_Pi is: " << my_pi << endl; cout << fixed << setprecision(15) << " Processing error is: " << Error_of_Computing << endl; cout << fixed << setprecision(15) << " Processing time is: " << End_Time-Start_Time << endl; _getch();  return 0;