/in/foo.c: In function 'main':
/in/foo.c:25:19: warning: format '%d' expects argument of type 'int', but argument 2 has type 'double' [-Wformat=]
  if(k==0)printf("%d",y);
                   ^
/in/foo.c:5:10: warning: unused variable 'j' [-Wunused-variable]
  int k,i,j;
          ^