78IV datasheet(12/523 Pages) NEC

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User’s Manual U15556EJ1V0UM

CHAPTER 7 STRUCTURES AND UNIONS .................................................................................... 125

7.1

Structures ........................................................................................................................... 126

(1)

Declaration of structure and structure variable ........................................................................... 126

(2)

Structure declaration list ............................................................................................................. 127

(3)

Arrays and pointers .................................................................................................................... 128

(4)

How to refer to structure members ............................................................................................. 129

7.2

Unions ................................................................................................................................. 130

(1)

Declaration of union and union variable ..................................................................................... 130

(2)

Union declaration list .................................................................................................................. 130

(3)

Union arrays and pointers .......................................................................................................... 131

(4)

How to refer to union members .................................................................................................. 132

CHAPTER 8 EXTERNAL DEFINITIONS ........................................................................................ 133

8.1

Function Definition............................................................................................................. 134

8.2

External Object Definitions ............................................................................................... 136

CHAPTER 9 PREPROCESSING DIRECTIVES (COMPILER DIRECTIVES) .............................. 137

9.1

Conditional Translation Directives ................................................................................... 137

(1)

#if directive ................................................................................................................................. 138

(2)

#elif directive............................................................................................................................... 139

(3)

#ifdef directive ............................................................................................................................ 140

(4)

#ifndef directive .......................................................................................................................... 141

(5)

#else directive............................................................................................................................. 142

(6)

#endif directive ........................................................................................................................... 143

9.2

Source File Inclusion Directive ......................................................................................... 144

(1)

#include < > ............................................................................................................................... 145

(2)

#include “ ” ................................................................................................................................. 146

(3)

#include preprocessing token string ........................................................................................... 147

9.3

Macro Replacement Directives ......................................................................................... 148

(1)

Actual argument replacement..................................................................................................... 148

(2)

# operator ................................................................................................................................... 148

(3)

## operator ................................................................................................................................. 148

(4)

Re-scanning and further replacement ........................................................................................ 149

(5)

Scope of macro definition ........................................................................................................... 149

(6)

#define directive ......................................................................................................................... 150

(7)

#define( ) directive ..................................................................................................................... 151

(8)

#undef directive .......................................................................................................................... 152

9.4

Line Control Directive ........................................................................................................ 153

(1)

To change the line number ......................................................................................................... 153

(2)

To change the line number and the file name ............................................................................ 153

(3)

To change using preprocessing token string.............................................................................. 153

9.5

#error Preprocessing Directive ......................................................................................... 154

9.6

#pragma Directives ............................................................................................................ 155

9.7

Null Directives .................................................................................................................... 155

9.8

Compiler-Defined Macro Names ....................................................................................... 156

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