CC78K4 datasheet(51/523 Pages) NEC

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User’s Manual U15556EJ1V0UM

CHAPTER 3 DECLARATION OF TYPES AND STORAGE CLASSES

This chapter explains how data (variables) or functions to be used in C should be declared as well as the scope

for each data or function. A declaration means the specification of an interpretation or attribute for an identifier or a

collection of identifiers. A declaration to reserve a storage area for an object or function named by an identifier is

referred to as a “definition”.

An example of a declaration is shown below.

#define

TRUE 1

#define

FALSE

#define

SIZE 200

void main(void)

{

auto int i, prime,

/* declaration of automatic variables */

for ( i = 0 ; i <= SIZE ; i++)

mark [i] = TRUE ;

A declaration is configured with a storage class specifier, type specifier, initialize declarator, etc. The storage

class specifier and type specifier specify the linkage, storage duration, and the type of entity indicated by the

declarator. An initialize declarator list is a list of declarators delimited with a comma. Each declarator may have

additional type information or initializer or both.

If an identifier for an object is declared to have no linkage, the type of the object must be perfect (the object with

information related to the size) at the end of the declarator or initialize declarator (if it has an initializer).

CC78K4 Datasheet(PDF) 51 Page - NEC