Executes a statement repeatedly until the value of condition becomes false. The test takes place after each iteration

Mathematical functions

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

Queries the alignment requirement of its operand type. Syntax

Defined in header <complex.h>

Defined in header <math.h>

Defined in header <uchar.h>

Defined in header <math.h>

(See also arithmetic types for the details on most

Defined in header <stdlib.h>