Why does my code have errors?

Question

https://code.sololearn.com/ck2tDG2Yz7pw/?ref=app

Answer 1

and add "check =false;" at the end of while loop..

Answer 2

You should fix below:
1/ compare(string source; string mixed)
change to:
compare(string source, string mixed)
(use comma to separate function parameters)
2/ Add ; at the end of line 43:
compare(sourceString, mixString(sourceString));

Answer 3

You're welcome!

Answer 4

thank you!