Creating Windows MessageBox in C
Basic Structure
int MessageBox(
[in, optional] HWND hWnd,
[in, optional] LPCTSTR lpText,
[in, optional] LPCTSTR lpCaption,
[in] UINT uType
);
For all information visit
https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-messagebox