Regarding WHILE...WEND

The manual states

Quote:

---

5.85. WHILE..WEND
WHILE Condition
Statement...
WEND
Repeatedly execute Statements WHILE Condition is true. When the
Condition is no longer true, execution continues at the statement
following the WEND. Condition may be any comparison expression.
i = 1
WHILE i <= 10
Serout 0,N2400,[”No:”,#i,13,10]
i = i + 1
WEND

---

What if this happens:

Code:

---

WHILE x < number
 WHILE a = b
  x = x + 1
 WEND
WEND

---

If x = number will the outer WHILE loop notice?

Hi,

You'll get an endless loop ...

cause "WHILE x < number" will be checked only once at start ...

only way out : a <> b AND x < Number ...



just replace it by

[code]

WHILE ( x < number AND a=b )

x = x + 1

WEND


Alain

Fine. Something else.

If there is

Code:

---

WHILE number < 3000
 number = number + 1
WEND

---

Is number = 2999 or 3000 when the loop ends? What About REPEAT...UNTIL?

Quote:

---

Originally Posted by Security

Fine. Something else.

If there is

Code:

---

WHILE number < 3000
 number = number + 1
WEND

---

Is number = 2999 or 3000 when the loop ends? What About REPEAT...UNTIL?

---

The code will see 2999 as less than 3000, therefore it will increment as per the next line, so when the loop ends you have number=3000.

Code:

---

WHILE number < 3000
 number = number + 1
WEND

---

Code:

---

REPEAT
 number = number + 1
UNTIL number = 3000

---

If you entered each above code sections with number < 3000, these two conditional loops would operate identically, and number would be incremented until number = 3000.

BUT, if you entered with number > 2999 Then...
- The WHILE..WEND would not execute, and number would remain the same.
- The REPEAT..UNTIL loop would execute 1 time, and number would be incremented by 1.

HTH,
SteveB

Quote:

---

Originally Posted by SteveB

Code:

---

WHILE number < 3000
 number = number + 1
WEND

---

Code:

---

REPEAT
 number = number + 1
UNTIL number = 3000

---

If you entered each above code sections with number < 3000, these two conditional loops would operate identically, and number would be incremented by 1.

BUT, if you entered with number > 2999 Then...
- The WHILE..WEND would not execute, and number would remain the same.
- The REPEAT..UNTIL loop would execute 1 time, and number would be incremented by 1.

HTH,
SteveB

---

The first one is what my experience also showed. So everything is fine.

Quote:

---

The code will see 2999 as less than 3000, therefore it will increment as per the next line, so when the loop ends you have number=3000.

---

That is what I experienced.

Hi, Security

Just remember the "number" is checked at WHILE and UNTIL lines ( where you write the test ) and it bails out ( if test true ) just after.

Alain

Mikroelektronika manuals ( basic and C ) have a very nice explanation of that ...

Alain

Hi, Acetronics

Just remember the problem is solved.

Security

Hi,

Ok, well noted ...

Read you soon... new member.

Alain