Defined in header <math.h>

Defined in header <wctype.h>

Comments serve as a sort of in-code documentation. When inserted into a program, they are effectively ignored by the compiler; they are solely intended to be used as notes

Defined in header <math.h>

Defined in header <string.h>

Defined in header <math.h>

Usage thread

Defined in header <math.h>

Defined in header <stdlib.h>

Defined in header <math.h>