/in/foo.c: In function 'main':
/in/foo.c:16:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before '==' token
  for(int i==;i<c;i++)
           ^~
/in/foo.c:16:14: error: 'i' undeclared (first use in this function)
  for(int i==;i<c;i++)
              ^
/in/foo.c:16:14: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:16:17: error: expected ')' before ';' token
  for(int i==;i<c;i++)
                 ^