Record some of the small points of knowledge found in peacetime

Good memory is not as bad as writing, write too much trouble in here to record some of the scattered small knowledge points usually seen

The 1.c language function pointer array must have the same input and output values, and the function pointer array can be defined as follows:

void (*fun[256]) (void); Fun[0] = Function0; ......;

Call methods are: (*fun[0]) (), can also be used fun[0] (), or even (*****fun[0]) (), which is a bad method in ANSI C popular.

Record some of the small points of knowledge found in peacetime