C Pocket Reference

Name

typedef

Synopsis

The keyword typedef is used to give a type a new name.

Examples:

typedef unsigned char UCHAR;
typedef struct { double x, y } POINT;

After these type definitions, the identifier UCHAR can be used as an abbreviation for the type unsigned char, and the identifier POINT can be used to specify the given structure type.

Examples:

UCHAR  c1, c2, tab[100];
POINT point, *pPoint;

In a typedef declaration, the identifier is declared as the new type name. The same declaration without the typedef keyword would declare a variable and not a type name.