/in/foo.cc: In function 'int main()':
/in/foo.cc:22:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int k=0;k<=9;k++)
     ^~~
/in/foo.cc:26:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  for(int i=0;i<=9;i++)
  ^~~
/in/foo.cc:31:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<m.length();i++)
                 ~^~~~~~~~~~~