User manual

224
mikoPascal PRO for dsPIC30/33 and PIC24
MikroElektronika
Assignment Statements
Assignment statements have the following form:
variable := expression;
The statement evaluates expression and assigns its value to variable. All the rules of implicit conversion are
applied. Variable can be any declared variable or array element, and expression can be any expression.
Do not confuse the assignment with relational operator = which tests for equality. Also note that, although similar, the
construction is not related to the declaration of constants.
Compound Statements (Blocks)
Compound statement, or block, is a list of statements enclosed by keywords begin and end:
begin
statements
end;
Syntactically, a block is considered to be a single statement which is allowed to be used when Pascal syntax requires
a single statement. Blocks can be nested up to the limits of memory.
For example, the while loop expects one statement in its body, so we can pass it a compound statement:
while i < n do
begin
temp := a[i];
a[i] := b[i];
b[i] := temp;
i := i + 1;
end;
Conditional Statements
Conditional or selection statements select one of alternative courses of action by testing certain values. There are two
types of selection statements:
- if
- case