C++ is an very powerful programming language. It is efficient and flexible. When writing C++ programs, we may often need to process strings and often we need to check whether a string begin with some substring or end with some substring. We can use following functions to ahieve these:    static bool beginWith(const std::string str,const std::string needle){        return (!str.compare(0,needle.length(),needle));    }    static bool endWith(const std::string str,const std::string needle){       &...