Clearing the Contents of a Memory File

When you no longer need the contents of a memory file, you can free the memory allocated to hold the contents with the memory file clear function, mf_clr():

void mf_clr(mfp)

MFILEPTR mfp;        /* Pointer to memory file to clear        */

Function mf_clr() clears a memory file by returning it to an empty state. Memory allocated for all filled rows is freed. The empty file remains in existence, ready to be filled again.