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.
To provide a more specific guide, could you you have so far or describe the problem the book is asking you to solve? pagina 62 ver 3.cpp
Ensure the user doesn't enter text when a number is expected. Based on your request, "pagina 62 ver 3