Based on your request, "pagina 62 ver 3.cpp" likely refers to a specific exercise or version of a program from a textbook or programming course. While I don't have the exact contents of every textbook, this usually points to of a C++ programming manual.
If the exercise is specifically "Version 3" of a program you've written before, the "guide" usually expects you to optimize the code. Common upgrades include: pagina 62 ver 3.cpp
Regardless of the specific problem, your ver 3.cpp file should follow this basic template: Based on your request, "pagina 62 ver 3
Ensure the user doesn't enter text when a number is expected. Based on your request