//////////////////////////////////////////////////////////////// ////******CHALLENGE:Only increasing or decreasing words******* ////****************Author: Petros Simidyan********************* //*****************Version 2.0 (with macros) #include #include #include using namespace std; #define isUp(c) ((c)>='A'&&(c)<='Z') #define toLow(c) (isUp(c)? ((c) = (c)+ 'a' -'A'): (c)) inline void simplifyString(string& input) { for (int i = 0; i < input.size(); i++) toLow(input[i]); } //recursive functions for testing the strings inline bool isDec(const string s) { if (s.size() == 1) return true; if (s[0] >= s[1]) return isDec(s.substr(1, s.size() - 1)); else return false; } inline bool isInc(const string s) { if (s.size() == 1) return true; if (s[0] <= s[1]) return isInc(s.substr(1, s.size() - 1)); else return false; } inline void printSolution(const string& input) { if (isDec(input) || isInc(input)) cout << input << endl; } int main() { string input, output; cout << "Please give your text." << endl; getline(cin, input); istringstream iss(input); cout << "Here are the increasing and decreasing words!" << endl; while (iss >> output) { simplifyString(output); printSolution(output); } return 0; }

Only increasing or decreasing words, with macros