Each identifier that appears in a C program is only visible (that

Defined in header <stdatomic.h>

Defined in header <wctype.h>

Defined in header <wctype.h>

Defined in header <math.h>

Defined in header <complex.h>

Usage declaration of an enumeration

Defined in header <threads.h>

Defined in header <math.h>

Logical operators apply standard boolean algebra operations to their operands. Operator