Mikroelektronika MIKROE-742 데이터 시트

The for statement implements an iterative loop and requires you to specify the num-
ber of iterations. The syntax of the for statement is:

for counter := initial_value to final_value do statement
// or

for counter := initial_value downto final_value do statement

counter

is a variable which increments (or decrements if you use 

downto

) with each

iteration of the loop. Before the first iteration, 

counter

is set to 

initial_value

and

will increment (or decrement) until it reaches 

final_value

. With each iteration,

statement will be executed.

initial_value

and 

final_value

should be expressions compatible with 

count-

er; statement

can be any statement that does not change the value of 

counter

.

Here is an example of calculating scalar product of two vectors, a and b, of length
n, using the for statement:

s := 0;
for i := 0 to n-1 do

s := s + a[i] * b[i];

The for statement results in an endless loop if final_value equals or exceeds the
range of the counter’s type.

More legible way to create an endless loop in Pascal is to use the statement 

while

TRUE do.

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- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 5