/in/foo.cc: In function 'int main()':
/in/foo.cc:62:75: warning: left operand of comma operator has no effect [-Wunused-value]
                         *longestStrPtr = currentStrPtr->substr((lastIndex + 1, currentStrPtr->size() - 1 - lastIndex));
                                                                 ~~~~~~~~~~^~~
/in/foo.cc:76:59: warning: left operand of comma operator has no effect [-Wunused-value]
         *longestStrPtr = currentStrPtr->substr((lastIndex + 1, currentStrPtr->size() - 1 - lastIndex));
                                                 ~~~~~~~~~~^~~