/in/foo.cc: In function 'int main()':
/in/foo.cc:15:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   if(a[i]==0 && a[i+1]==0)a[i]=k;k++;
   ^~
/in/foo.cc:15:34: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
   if(a[i]==0 && a[i+1]==0)a[i]=k;k++;
                                  ^