foo.cc: In function ‘int main()’:
foo.cc:9:5: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
    9 |     if(k>=2)
      |     ^~
foo.cc:11:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
   11 |         for(int i=2;i<k;i++)
      |         ^~~