Recent content by opt!kal

So a little update, I changed gets to fgets and it seems like it will take any amount of comannds piped together, but only if it ends with a redirection operator or else I get errors like: <COMMAND>: invalid option -- ' where COMMAND is the last command in the sequence

Homework Statement Hi there, So I am working on this assignment where the user is supposed to input a variety of UNIX commands and they must behave as if one typed it into the terminal. My current problem lies with when a user tries to redirect the inputted commands to some file. Currently...

*smacks self on forehead* 8, there are 8 bits in a byte! So then I should probably have something like: ('A' << 8) | A correct?

Hrmm I think I see what you're saying, basically do a left shift by a byte (x << 4, correct?) and then or it with what the original was? But nothing is being passed into the function, and I need a variable in order to do the left shift correct? I guess I'm still having trouble comprehending...

Homework Statement /* * evenBits - return word with all even-numbered bits set to 1 * Legal ops: ! ~ & ^ | + << >> * Max ops: 8 * Rating: 2 */ int evenBits(void) { return ?; } The Attempt at a Solution I have no idea! What I originally thought was that I would...

Okay so for the square root problem, my inductive step is basically that I can use the compass to create a circle, and since we assumed that we could draw sqrt(k) we can simply make two perpendicular lines that intersect at a 90 degree angle, and from the basis we can just mark off one from...

so i was talking to my TA again, and he basically said: Which is basically dick has said, but my only question is does anyone think they know what he means by pick a point on the outside? Also, exk, for number two, Since k would be the least element that could not be written as distinct powers...

Ahh I see what you're saying, because we proved P(1) in the basis, and for the P(K+1) case we can draw a diameter of k within the circle, we simply let the P(1) intersect P(k) since we assume we can draw these, and they form a 90 degree angle, and basically apply Pythagorean theorem to get the...

[SOLVED] Couple of Proofs (Regular Induction / Well Ordering) Hi there everyone, I've been having a bit of trouble of solving these questions, so any help would be greatly appreciated: Homework Statement 1: Prove, via regular induction, that it is possible to draw a line-segment of length...

I really don't get what you're trying to say. So if I take the elements of the Subset of A and map them to elements of B, making a new subset for B, how does help with the Powerset of A mapping to the powerset of B, as well as creating a bijective function? My only guess as to why you could do...

5'4" and 110 lbs. Yes I am horribly short and skinny. And I'm almost positive my Linear Algebra and Diff Eqn. Professor thinks I am 16 =/ (i'm actually 21).

Hi there, I'm having a lot of trouble understanding this particular problem, and I hope the fine people of this forum can help me out =) Homework Statement Let A and B be infinite sets with the same cardinality. Prove that P(A) and P(B) have the same cardinality. Do this by giving...

Do I have do consider the infiite case? I just thought since it stated within the problem that the sets were finite, that was what I should focus. In any case, I will give it some thought and get back to you.

I apologize for the title, I really don't know how to describe these problems, so I just listed the categories that they fall under. Anyways... Homework Statement Let f: A->B be a function, where A and B are finite sets and |A| =|B| (they have the same size I believe). Prove that f is...

So for the first one I know that if x = 2k, then I have ⌈x/2⌉ = ⌈2k / 2⌉ which is equal to k right? then (x + 1)/2 would equal (2k + 1) / 2, which can be written as (2k)/2 + 1/2 which can also be written as k + 1/2? so I would have ⌈k⌉ ≤ k + 1/2? Would that solve the even case? Working the...