/in/foo.c: In function 'main':
/in/foo.c:14:6: warning: unused variable 'count' [-Wunused-variable]
  int count=0;
      ^~~~~
/in/foo.c: In function 'InsertSort':
/in/foo.c:51:5: error: 'j' undeclared (first use in this function)
   a[j+1]=tmp;
     ^
/in/foo.c:51:5: note: each undeclared identifier is reported only once for each function it appears in