This section describes the most commonly used functions in the
`standard C library'. In C, a function should be declared before it can
be used (see here).
Declarations of the functions in the standard library are provided by
a number of header files, which can be read-in automatically at the
start of your program. For example, to read in the header file
stdio.h, which declares the input-output functions, put
|
#include <stdio.h> |