Why it returns 4

Question

In this statement
printf("%d\n",sizeof((b == 1) ? c : b));
b is short integer initialized to 2
c is a float
b does not equal to 1 so it should printf sizeof(b)
consequently it prints 2
but actually it prints 4

if I switch between b and c >>> b:c
it also return 4

Thanks for helping

Answer 1

https://stackoverflow.com/questions/24932717/operator-sizeof-with-conditional-ternary-expression

Answer 2

Thanks for all you are the best

Answer 3

Sahil Bhakat I know that, and the question is why the output is 4 instead of 2 here. We can't just agree that C is wrong?

Answer 4

‎‏‪ABADA S‬‏‎ As clarified in the article posted by Zen , the sizeof operator will return the size of the expression, which is the common type that can be used for all possible results. In this case, a 2 byte short can fit into a 4 byte float, but not the other way around. Therefore, the sizeof operator will evaluate for the larger type size in this expression.

Answer 5

Anna
you were right from this first see this
https://www.sololearn.com/post/61449/?ref=app

Answer 6

Anna That is interesting because when I ran this earlier, my code returned a 4. When I used your modified print format, I got 0.00000.

This is probably due to different compilers on our systems.

Answer 7

Sahil Bhakat You must have deleted an earlier response because the continuity is now a bit off.

Without more context, I'm not sure what the relevance of this article is. Also, why not just paste a link to the page instead of a link to your activity post which is a screenshot of the page?

Answer 8

I'm not sure, but it looks like b is converted to a float in the process. Because if I replace the line with printf("%d\n", (b == 1) ? c : b), my compiler complains that "%d" expects an integer, but the argument has the type float. And when I change it to printf("%.2f\n", (b == 1) ? c : b), the output is 2.00.

Answer 9

I thought it should be better to look at and easier than finding the answer of this question as the question i was seaching for is not the same
And now i have also mentioned the link in my post

Answer 10

Sahil Bhakat You can use the Share link next to the answer in Stackoverflow.com you'd like to highlight to make it clear which response to focus on.

Like this:
https://stackoverflow.com/a/8535301

Answer 11

David Carrol Yeah i know how to do it and I have done before also but i thought the content was a bit messed up so that's why i did it