Programming Question

W

Wjs

New Member

• Jun 30, 2016

• #1

1. Explain the three statements needed to to formulate a for loop.
   

Answer:

1. Something to do before starting
   
   
2. A test to perform as long as it’s true, keep looping
   
   
3. Something to do after each loop (increase a variable)
   

I have answer the above question but don't know is correct anot. Please advise

 

P

Pommie

Well-Known Member

Most Helpful Member

• Jun 30, 2016

• #2

That is correct for C.
I.E. for (i=1;i<8;i++)
OR for (i=1;i<128 && !done;i*=2)

However for Basic the test (2) is automatic.
I.E. for 1=1 to 10

Mike.

 

Daniel Wood

Member

• Jun 30, 2016

• #3

The first answer seems a little vague to me.
If you're doing this as part of a test, I think you would need to talk about the initialisation or setting the variable to be used in the second or third section to get the marks.

 

Nigel Goodwin

Super Moderator

Most Helpful Member

• Jun 30, 2016

• #4

Daniel Wood said:

The first answer seems a little vague to me.
If you're doing this as part of a test, I think you would need to talk about the initialisation or setting the variable to be used in the second or third section to get the marks.

Click to expand...

I would imagine it's a multiple choice question?, so 2 would be correct.

 

Daniel Wood

Member

• Jun 30, 2016

• #5

Who knows.. Maybe Wjs can enlighten us

The question asks to explain, so I think the question requires three separate answers.
If this is the case, they are all correct, but they could be worded better.

 

Ian Rogers

User Extraordinaire

Forum Supporter

Most Helpful Member

• Jun 30, 2016

• #6

The way I read it....... Explain the three statements!! .... " for( 1 ; 2 ; 3 ) " Therefore only answer 2 is correct...

 

Dr_Doggy

Well-Known Member

• Jun 30, 2016

• #7

I think thats right.... Explain the three statements!! .... " for( 1 ; 2 ; 3 ) "

but whats wrong with answer 1&3
1 happens prior to loop (before starting)
and
3 happens at the end of each loop

 

Ian Rogers

User Extraordinaire

Forum Supporter

Most Helpful Member

• Jun 30, 2016

• #8

Oh I see!!! 1) start variable statement ... 2) while true statement... and 3) conditional loop statement ...

The Tutor just wants you to explain each element!!!

 

K

KeepItSimpleStupid

Well-Known Member

Most Helpful Member

• Jun 30, 2016

• #9

I think the point is to know the difference between a FOR and a WHILE loop. the HINT is the WHILE loop will always execute once.

Consider
x=4
While x<=3
Print x
x=x+1
Next

and

For x = 0 to -1 step 1
print x
Next

 

NorthGuy

Well-Known Member

• Jul 1, 2016

• #10

C:

for (a; b; c) {
  d;
}

is equivalent to

C:

a;
while (b) {
  d;
  c;
}

There are some differences, e.g. the use of "continue", but it's probably not important here.

 

K

KeepItSimpleStupid

Well-Known Member

Most Helpful Member

• Jul 1, 2016

• #11

See: http://www.softwareandfinance.com/Java/Difference_Loops.html

 

W

Wade_Hassler

New Member

• Jul 1, 2016

• #12

(I think the OP should clarify the question, but, til then...)
It seems that OP gave the three statements as answer to the question "what are the three etc?" and that his post is just (unwarranted) self-doubt

 

DerStrom8

Super Moderator

• Jul 1, 2016

• #13

His question was very poorly worded. I think he should re-ask but make his question MUCH more clear.

 

Ian Rogers

User Extraordinaire

Forum Supporter

Most Helpful Member

• Jul 1, 2016

• #14

The question is right...

Question : - Explain the three statements needed to to formulate a for loop.

WJS has answered..

1. Something to do before starting
   
   
2. A test to perform as long as it’s true, keep looping
   
   
3. Something to do after each loop (increase a variable)
   

WJS asks : -- Are my answers near the mark??

We need to agree or disagree with WJS's answers....

 

DerStrom8

Super Moderator

• Jul 1, 2016

• #15

Hmm, I must have misread it. Yes, I agree that the three answers provided are correct.