What am I missing?

[coldmeat]

This is from a beginner programming course that I'm taking as an elective. This is a question from a practice quiz.

I must be missing something super obvious...

wtf?

 

[techs]

What am I missing?

A brain?

 

[CPA]

my guess is the float, instead of using int

But, i haven't done programming in years.

 

[coldmeat]

I'm thinking the quiz just might be fucked up...

 

[highland145]

I'm thinking the quiz just might be fucked up...

You in class now?

 

[coldmeat]

You in class now?

no, classes ended 2 weeks ago

 

[rudeguy]

I'm thinking you missed the programming forum???

 

[Numenorean]

my guess is the float, instead of using int

But, i haven't done programming in years.

That would be my guess as well, as otherwise I don't see anything wrong with it.

 

[highland145]

no, classes ended 2 weeks ago

and you're still working on it? Kidding.


From the post, wondered if you snapped a pic of the test you were taking.

 

[Drako]

I'm thinking the quiz just might be fucked up...

That quiz question seem correct to me, why do you think 4 is the correct answer?

 

[Tweak155]

Yeah both of those you have the right answer.

EDIT:

Meaning the X is right and the blue arrows are wrong.

 

[coldmeat]

That quiz question seem correct to me, why do you think 4 is the correct answer?

3 + 1 = 4 doesn't it?

 

[Drako]

Yeah both of those you have the right answer.

LOL, no he doesn't.

 

[Drako]

3 + 1 = 4 doesn't it?

I'm not a programmer, but I know that a semicolon is a statement terminator.

The second line does nothing, the third line sets X=0

0+2=2 last time I checked

 

[Tweak155]

LOL, no he doesn't.

LOL, yes he does. I think the LOL made my point stronger... yep, it did.

 

[Tweak155]

I'm not a programmer, but I know that a semicolon is a statement terminator.

The second line does nothing, the third line sets X=0

0+2=2 last time I checked

There you go. Much better answer than LOL.

 

[FDF12389]

Is the class already graded?

 

[coldmeat]

I'm not a programmer, but I know that a semicolon is a statement terminator.

The second line does nothing, the third line sets X=0

0+2=2 last time I checked

damn, I didn't notice that, and I know that semicolons are one of the things I should be constantly checking.

 

[Tweak155]

damn, I didn't notice that, and I know that semicolons are one of the things I should be constantly checking.

It makes sense on that second one. The first one should still work, though. If X was declared as an integer it would never reach 1.1 but floats should be. Either float or double you should be able to reach 1.1. Integers truncate.

EDIT:

I would just put it in a program and see what happens. Based on the printf statement I'm assuming its just C.

 

[coldmeat]

Is the class already graded?

no, final is today

 

[KaChow]

That quiz question seem correct to me, why do you think 4 is the correct answer?

The ; after the first if ends the statement. The next statement resets x to 0. The next if-else is testing x against 3 but it is 0 so it adds 2...therefore, x = 0 + 2 or simply 2.

If the ; wasn't placed after the first if statement the condition to set x to 0 wouldn't be met and x would still == 3. The final if-else would add 1 and the answer would be 4.

 

[coldmeat]

I would just put it in a program and see what happens. Based on the printf statement I'm assuming its just C.

I just did and it ran infinitely

 

[Tweak155]

I just did and it ran infinitely

What did X print as?

 

[coldmeat]

What did X print as?

Well I couldn't see it cause it was moving so fast, but it was printing numbers with 6 decimal places

 

[Tweak155]

Well I couldn't see it cause it was moving so fast, but it was printing numbers with 6 decimal places

Interesting to know. Mathematically 1.1 does equal 1.100000. Never would have thought a computer wouldn't be able to figure that out.

EDIT:

I added this to a compiler and it works if you have while(x < 1.1). It will quit when it hits 1.1. That is messed up.