# What does the return 0 block does **URL:** \ **Category:** Help\ **Created:** [August 23, 2020, 1:08pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204 "2020-08-23T13:08:14Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![Dreadmask197](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/dreadmask197/32/10494_2.png) [@Dreadmask197](https://forum.makecode.com/u/Dreadmask197)\ **Post date:** [August 24, 2020, 8:26pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/21 "2020-08-24T20:26:45Z")
It’s fine. I’m just starting 8th grade on the second week so I wouldn’t know about the whole math thing ---
**Author:** ![Dreadmask197](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/dreadmask197/32/10494_2.png) [@Dreadmask197](https://forum.makecode.com/u/Dreadmask197)\ **Post date:** [August 24, 2020, 8:27pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/22 "2020-08-24T20:27:47Z")
The only time I use math is when I watch the arcade advance or pick random or that calculator I made ---
**Author:** ![Dreadmask197](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/dreadmask197/32/10494_2.png) [@Dreadmask197](https://forum.makecode.com/u/Dreadmask197)\ **Post date:** [August 24, 2020, 8:28pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/23 "2020-08-24T20:28:52Z")
> [@A Calculator](https://forum.makecode.com/t/a-calculator/3044): > > MATH The only time I used + - / or x ---
**Author:** ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)\ **Post date:** [August 24, 2020, 8:29pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/24 "2020-08-24T20:29:36Z")
Okay, you know these blocks? ![Screenshot_20200824-162843](https://us1.discourse-cdn.com/flex020/uploads/makecode/original/2X/e/ee29bfe6026b7a337962240a2eaf5847717e830d.jpeg) ---
**Author:** ![Dreadmask197](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/dreadmask197/32/10494_2.png) [@Dreadmask197](https://forum.makecode.com/u/Dreadmask197)\ **Post date:** [August 24, 2020, 8:30pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/25 "2020-08-24T20:30:25Z")
Not the first one or the third one. I forgot what the 4th one did tho ---
**Author:** ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)\ **Post date:** [August 24, 2020, 8:31pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/26 "2020-08-24T20:31:14Z")
They are all functions, just like the ones you define yourself with the dark blue blocks. ---
**Author:** ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)\ **Post date:** [August 24, 2020, 8:31pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/27 "2020-08-24T20:31:27Z")
Except Arcade has already defined them for you ---
**Author:** ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)\ **Post date:** [August 24, 2020, 8:31pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/28 "2020-08-24T20:31:42Z")
And see how they are oval shaped? ---
**Author:** ![Dreadmask197](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/dreadmask197/32/10494_2.png) [@Dreadmask197](https://forum.makecode.com/u/Dreadmask197)\ **Post date:** [August 24, 2020, 8:31pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/29 "2020-08-24T20:31:45Z")
Yes that is true ---
**Author:** ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)\ **Post date:** [August 24, 2020, 8:32pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/30 "2020-08-24T20:32:20Z")
That means it returns something, like how the pick random function gives you a random number ---
**Author:** ![Dreadmask197](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/dreadmask197/32/10494_2.png) [@Dreadmask197](https://forum.makecode.com/u/Dreadmask197)\ **Post date:** [August 24, 2020, 8:33pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/31 "2020-08-24T20:33:40Z")
Oh and like how the 2+2 returns you a 4? ---
**Author:** ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)\ **Post date:** [August 24, 2020, 8:34pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/32 "2020-08-24T20:34:24Z")
Yes, but no. That’s a complicated one, because it’s an expression. But it acts and looks like a function in blocks, so yeah ---
**Author:** ![Dreadmask197](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/dreadmask197/32/10494_2.png) [@Dreadmask197](https://forum.makecode.com/u/Dreadmask197)\ **Post date:** [August 24, 2020, 8:35pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/33 "2020-08-24T20:35:03Z")
I was close wasnt I ---
**Author:** ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)\ **Post date:** [August 24, 2020, 8:35pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/34 "2020-08-24T20:35:58Z")
Yes. I was confused between the difference of functions and expressions for a long time. There essentially the same, except the expression has no parenthesis when you use text based languages like Python or Typescript ---
**Author:** ![Dreadmask197](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/dreadmask197/32/10494_2.png) [@Dreadmask197](https://forum.makecode.com/u/Dreadmask197)\ **Post date:** [August 24, 2020, 8:35pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/35 "2020-08-24T20:35:59Z")
![image](https://us1.discourse-cdn.com/flex020/uploads/makecode/original/2X/1/1abd95db2ec836c198982a0fb1cee359af0babe3.png) That means this returns a number as in 0 in the picture ---
**Author:** ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)\ **Post date:** [August 24, 2020, 8:36pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/36 "2020-08-24T20:36:57Z")
If you put that in a function, it will give a 0 if that statement is run. So yes! ---
**Author:** ![Dreadmask197](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/dreadmask197/32/10494_2.png) [@Dreadmask197](https://forum.makecode.com/u/Dreadmask197)\ **Post date:** [August 24, 2020, 8:37pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/37 "2020-08-24T20:37:18Z")
But then where does 0 go to? ---
**Author:** ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)\ **Post date:** [August 24, 2020, 8:37pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/38 "2020-08-24T20:37:36Z")
Let me do some blocks for a sec… ---
**Author:** ![Dreadmask197](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/dreadmask197/32/10494_2.png) [@Dreadmask197](https://forum.makecode.com/u/Dreadmask197)\ **Post date:** [August 24, 2020, 8:38pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/39 "2020-08-24T20:38:16Z")
sorry that this is taking a long time ---
**Author:** ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)\ **Post date:** [August 24, 2020, 8:39pm UTC](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204/40 "2020-08-24T20:39:02Z")
No problem! Say we have this function: ![Screenshot_20200824-163822](https://us1.discourse-cdn.com/flex020/uploads/makecode/original/2X/f/fffab590b8489b7dae6d23ce526a7b4b7101436b.jpeg) [Previous page](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204.md?page=1) [Next page](https://forum.makecode.com/t/what-does-the-return-0-block-does/3204.md?page=3)