/in/foo.c: In function 'main':
/in/foo.c:3:14: error: expected ']' before ';' token
 #define N 100;
              ^
/in/foo.c:6:15: note: in expansion of macro 'N'
    char input[N];
               ^
/in/foo.c:7:13: error: 'input' undeclared (first use in this function)
  scanf("%s",input);
             ^~~~~
/in/foo.c:7:13: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:12:19: error: expected ';' before 'l'
  else printf("NO")l
                   ^