78IV datasheet(70/523 Pages) NEC

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User’s Manual U15556EJ1V0UM

CHAPTER 5 OPERATORS AND EXPRESSIONS

This chapter describes the operators and expressions to be used in the C language.

C has an abundance of operators for arithmetic, logical, and other operations. This rich set of operators also

includes those for bit and address operations.

An expression is a string or combination of an operator and one or more operands. The operator defines the

action to be performed on the operand(s) such as computation of a value, instructions on an object or function,

generation of side effects, or a combination of these.

Examples of operators are given below.

#define

TRUE

#define

FALSE

#define

SIZE

200

void lprintf(char *, int);

void putchar(char c);

char mark [SIZE+1];

+ ...................................................................

Arithmetic operator

void main(void) {

int i,

prime,

count;

count = 0;

=..............................................................

Assignment operator

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

++ .............................................

Postfix operator

mark [i] = TRUE;

<= .............................................

Relational operator

for

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

{

(mark [i])

{

prime = i + i + 3;

+ ...............................................

Arithmetic operator

lprintf (“%d”

, prime);

count++;

++ .............................................

Postfix operator

if ((count%8) == 0)

==.............................

Relational operator

putchar ('\n');

for

(k = i + prime ; k<=SIZE; k += prime)

+= ......

Assignment operator

mark [k] = FALSE;

}

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