/in/foo.c: In function 'main':
/in/foo.c:5:8: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  int N,count[1];
        ^~~~~
/in/foo.c: In function 'dg':
/in/foo.c:41:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j,u;
        ^