User manual

252
mikoC PRO for PIC32
MikroElektronika
Nested switch
Conditional switch statements can be nested – labels case and default are then assigned to the innermost
enclosing switch statement.
Iteration Statements (Loops)
Iteration statements allows to loop a set of statements. There are three forms of iteration statements in the mikroC PRO
for PIC32:
- while
- do
- for
While Statement
The while keyword is used to conditionally iterate a statement. The syntax of the while statement is:
while (expression) statement
The statement executes repeatedly until the value of expression is false. The test takes place before statement
is executed. Thus, if expression evaluates to false on the rst pass, the loop does not execute. Note that parentheses
around expression are mandatory.
Here is an example of calculating scalar product of two vectors, using the while statement:
int s = 0, i = 0;
while (i < n) {
s += a[i] * b[i];
i++;
}
Note that body of the loop can be a null statement. For example:
while (*q++ = *p++);
Do Statement
The do statement executes until the condition becomes false. The syntax of the do statement is:
do statement while (expression);
The statement is executed repeatedly as long as the value of expression remains non-zero. The expression is
evaluated after each iteration, so the loop will execute statement at least once.
Parentheses around expression are mandatory.