foo.c: In function 'main':
foo.c:5:13: error: conflicting types for 'y'; have 'int[32]'
    5 |         int y[32];
      |             ^
foo.c:4:11: note: previous declaration of 'y' with type 'int'
    4 |     int x,y,a,b=0,q=2;
      |           ^
foo.c:15:31: error: 'i' undeclared (first use in this function)
   15 |                 printf("%d",a[i]);
      |                               ^
foo.c:15:31: note: each undeclared identifier is reported only once for each function it appears in
foo.c:5:13: warning: variable 'y' set but not used [-Wunused-but-set-variable]
    5 |         int y[32];
      |             ^

[Hydro](https://hydro.ac)提供评测服务