/in/foo.c: In function 'main':
/in/foo.c:15:29: error: 'm' undeclared (first use in this function)
   15 |                             m=a[j];
      |                             ^
/in/foo.c:15:29: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:18:38: error: expected ';' before '}' token
   18 |                                 j=max
      |                                      ^
      |                                      ;
   19 |                         }
      |                         ~