/in/foo.c: In function 'main':
/in/foo.c:16:35: error: 'legnth' undeclared (first use in this function); did you mean 'length'?
   16 |                 int next_lenght = legnth;
      |                                   ^~~~~~
      |                                   length
/in/foo.c:16:35: note: each undeclared identifier is reported only once for each function it appears in