Duplicate issue.

Not an issue.

Typo in the Instructions
"This is a beginer's easy test" -> "This is a beginner's easy test" (or "easy test for beginners")

  char test[11] = "hailceasar";
  rot13(test, 11);

Unusual to include the '\0' in the length (11) passed?

lol these lines make me laugh so hard
if(totok == NULL) printf("ya fucked up malloc\n");
if(output == NULL) printf("ya fucked up malloc\n");
if(outputStreets == NULL) printf("ya fucked up malloc\n");
if(outputNumbers == NULL) printf("ya fucked up malloc\n");

Mostly habit. The safety of not depending on null terminators and instead being explicit.

What's the point of sizeOfStr?

The tasks may be similar, but the languages are different.

No need for another Caesar's cypher.
See:
https://www.codewars.com/kata/rot13
https://www.codewars.com/kata/rot13-1
https://www.codewars.com/kata/rot13-2
and many others.

Duplicate of so many katas. Should be retired.

Does anybody have an idea as to when T-Shirts may be delivered? As a buyer, I haven't recieved any dates or further information. Thanks.

Any comments about building up a series of katas which get progressivly harder? Like caesars cypher which just takes lower case words, and then one which takes capitals and punctuation, and then one which is rotX instead of rot13?

As a series, they'd be pretty easy steps from one to the next. On one hand that's good for teach people, on the other, it's like farming rep on here.

Duplicate. Or rather quadruplicate:
https://www.codewars.com/kata/rot13
https://www.codewars.com/kata/rot13-1
https://www.codewars.com/kata/rot13-2