/in/foo.cc:19:61: warning: multi-character character constant [-Wmultichar]
         if(str[i] == ' '||str[i]==','||str[i]=='.'||str[i]==', ')
                                                             ^~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:65:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(i=0; i<m; i++)
  ^~~
/in/foo.cc:68:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   cout<<sum-1;
   ^~~~