Using gcc to compile C file

[Kernelpanic]

also why must be latest, C is a C ...not C++ which
have lot of versions

For the same reason why there are updates to QB64pe. - There are also constant updates to the C compilers, not just for C++. Once because of improvements, and then when there are changes to the norm.
*)You can delete the C stuff in QB64. To program in C/C++ you use MinGW. There are also programs that require a C compiler.

*)There is a good program from . . . I can't find it right now.