(See also arithmetic types for the details on most

Every C program contains the definition (not the prototype) of a function called main, which is the designated start of the program.

Defined in header <math.h>

Defined in header <math.h>

Defined in header <threads.h>

Defined in header <string.h>

Defined in header <stdlib.h>

Defined in header <wchar.h>

Defined in header <<fenv.h>>

Defined in header <ctype.h>