/in/foo.c: In function 'main':
/in/foo.c:16:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   for (j=0;j<n;j++)
   ^~~
/in/foo.c:18:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
    b[j]=0;
    ^
/in/foo.c:5:10: warning: unused variable 'p' [-Wunused-variable]
  int i,j,p;
          ^