foo.cc: In function ‘int main()’:
foo.cc:20:17: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
   20 |                 if(k)
      |                 ^~
foo.cc:22:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
   22 |                         b[k]=0;
      |                         ^