foo.c: In function 'main':
foo.c:44:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   44 |     for(int i=0;i<n;i++)
      |     ^~~
foo.c:46:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   46 |         quickSort(a,0,n-1);
      |         ^~~~~~~~~
foo.c:47:9: warning: unused variable 'x' [-Wunused-variable]
   47 |     int x=0;
      |         ^

[Hydro](https://hydro.ac)提供评测服务