Microsoft Visual C++/cli step by Step

Invalid identifier

Reason for being invalid

0800Number

Must not start with a number

You+Me

Must contain only letters, numbers, and underscores (the plus sign is the culprit here)

return

Must not be a reserved word

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Microsoft Visual C++/CLI Step by Step

Outside of these restrictions, any identifier will work. However, some choices are not recommend-

ed, such as the following:

Identifier

Reason it’s not recommended

main

Could be confused with the function main.

INT

Too close to the reserved word int.

B4ugotxtme

Just too cryptic!

_identifier1

Underscores at the beginning of names are allowed, but they are not recommended because 

compilers often use leading underscores when creating internal variable names, and they are 

also used for variables in system code. To avoid potential naming conflicts, you should not use 

leading underscores.