Instruction manual

ManualsBrandsVax ManualsHousehold Appliances613 0S

USER

GROUP

NEWS

Issue 3 - Vol 2

This routine will function similarly

to

the

MDL/u

statements

FORI

= 1

TO

100

NEXT I

The

syntax of the

while

statement

is

while (legal

MDL/u

conditional)

Rational

statement

THE

FOR

STATEMENT

MPP

PRODUCT

INFORMATION

The

for

statement

is

another

Rational

loop, which

attempts

to carry the separation of loop - body from reason

for looping

a step further the the

while.

A

for

statement

allows explicit initialization,

extent,

and

increment

steps as

part

of the

statement.

For

example:

for (1=1;

1<=100;

1=1+2)

...

Is

equivalent to

i=O

while

(i<=100)

{

...

i=i+2

}

or the

MDL/u

source

FOR

1=

0

to

100

STEP

2

NEXT

I

However the

Rational

for

statement

is

not

a

MDL/u

FOR

statement.

The

MDL/u

FOR

is

not

supported

in

Rational.

The

syntax of the

for

statement

is

for (init;

condition;

increment)

Rational

statement

The

init, condition, and increment parameter may be

omitted

but

the

semicolons";"

must

be present. A non-

existent conditional

is

always true,

so

for (;;)

is

a loop forever.

THE

REPEAT

-

UNTIL

STATE:MENT

There are times when it

is

necessary to have a loop

that

tests at the

bottom

after one pass through.

This

is

done

by

the

repeat

-

until

statement.

repeat {

RATIONAL

statement

} until (conditional)

December 1983

TEKTRONIX

7