ABL electronic PIC Microcontrollers PIC16 - Manual (Page 124)

Expression Statements
Any expression followed by a semicolon forms an expression statement:
expression ;
mikroC executes an expression statement by evaluating the
expression
. All side
effects from this evaluation are completed before the next statement is executed.
Most expression statements are assignment statements or function calls.
The null statement is a special case, consisting of a single semicolon (
;
). The null
statement does nothing, and is therefore useful in situations where the mikroC syn-
tax expects a statement but your program does not need one. For example, null
statement is commonly used in “empty” loops:
for (; *q++ = *p++ ;);
/* body of this loop is a null statement */
Selection Statements
Selection or flow-control statements select from alternative courses of action by
testing certain values. There are two types of selection statements in C:
if
and
switch
.
If Statement
Use
if
to implement a conditional statement. Syntax of
if
statement is:
if ( expression ) statement1 [else statement2 ]
When
expression
evaluates to true,
statement1
executes. If expression is
false,
statement2
executes. The
expression
must evaluate to an integral
value; otherwise, the condition is ill-formed. Parentheses around the
expression
are mandatory.
The
else
keyword is optional, but no statements can come between the
if
and
the
else
.
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