/in/foo.c:3:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning (disable:4996)
 
/in/foo.c: In function 'main':
/in/foo.c:8:6: warning: variable 'a1' set but not used [-Wunused-but-set-variable]
  int a1, a2, a3, a4, a5, a6, a7, a8;
      ^~