/in/foo.c: In function 'main':
/in/foo.c:37:21: error: 'k' undeclared (first use in this function)
  printf("%c\n",Name[k]);
                     ^
/in/foo.c:37:21: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:11:6: warning: variable 'Name' set but not used [-Wunused-but-set-variable]
  int Name[N];
      ^~~~
/in/foo.c:6:6: warning: unused variable 'sumBUD' [-Wunused-variable]
  int sumBUD,sumAll;
      ^~~~~~