Random function in quiz question

Question

I came across, during a challenge, a question that used the random function in it. It looped through three times, each time outputting a number using the random function. Is there a way to know what it would output? Am I missing something?

Answer 1

One good possibility was that it could have been:

int x = 0;
for (i=0; i <=4; i+=2){
x*=rand()%4;
cout << x;
}

Else idk.

Answer 2

@J.G. Anything multiplied by 0 is 0, so no matter what rand()%4 is, x*=rand()%4 would be 0.

Answer 3

I think J.G. wouldn't have missed it if it asked for maximal num sequence.

Answer 4

Oh... I overlooked the simple part. That could be a possibility. Normally I don't forget about those parts!😐Thanks for the answers! I'll see if it comes up again.

Answer 5

Yeah lol. Get back to us if it comes up again.

Answer 6

It's probably doing rand() % 1, which will only output 0. The rand() value would be irrelevant to final answer.

Answer 7

No, it used rand()%4. I know this for sure.

Answer 8

Was it asking for program output or asking if the loop was infinite, or was it actually asking for loop count? Was it an MCQ or a subjective?

Answer 9

It was asking for the output. It had a for loop that would run three times, and it would output everything in a row (no spaces)

Answer 10

Was there anything else in the expression apart from rand()%4?

... Well, we can go on all day with this. There is no way to accurately predict the output of rand(). So either the question is faulty, or it actually has a turn somewhere wherein the random value would no longer be relevant to output.

Answer 11

i actually submitted some questions with rand()%something

only asked what could be the maximum inputted value tho, only requires some basic understanding of the rand() function and % operator

could have been in python tho...🤔

Answer 12

Here's what I recall of the code:
int x = 0;
for (i=0; i <=4; i+=2){
x=rand()%4;
cout << x;
}
I don't remember specifically the syntax they used for the rand function. That's the best that I remember it.

Answer 13

could be it asked what is the maximal number sequence that could be printed?

Answer 14

hmm... Interesting answers. @Hatsy Rei can you explain how you would know the answer to that?

Answer 15

Thanks Hatsy. Yeah, I'm sure it wasn't a maximum. It was just outputting 3 values from the rand function.