How do I create a folder in C and put my pgm in it?

/* Create our folder on the desktop */

HOBJECT hFolder, hObject;

hFolder = WinCreateObject ("wpFolder", "My Folder",
                           "OBJECTID=<MY_FOLDER>", "<WP_DESKTOP>",
                           CO_REPLACEIFEXISTS);

/* Now, put our object into the folder. */

hObject = WinCreateObject ("wpProgram", "My Online Book",
                           "EXENAME=VIEW.EXE;PARAMETERS=MYBOOK.INF;\
                           OBJECTID=<MY_BOOK>", "<MY_FOLDER>",
                           CO_REPLACEIFEXISTS);

What that little code snippet does is create a folder called "My Folder"
on the desktop, and puts a program object for an online book in it.
Check out the documentation on the following functions for more
information:

WinCreateObject
wpSetup (for information on the setup string parameter to WinCreateObj)
WPFolder (for information on the setup strings of folders)
WPProgram programs etc.