/* * * @ Javier Felipe Toribio 2020-02-18 * * challenge by ChillPill * * Proper spacing * * You work in a team where one of your * friends doesnt like to put spacing around * math operators. He codes like this: * * ``` * function myFunction(x,y){ * const a=25 * let b=x+y * b+=a * b/=4 * b-=5 * return b*42 * } * * ``` * This lack of spacing really bothers you. * Your friend just won't change so you * decide to make a code to add spacing * around the math * operators(-,+,=,+=,*=,%,%=,etc) and the * coma needs be followed by a space as well. * * Make a code that adds extra spacing in a * text string representing some code. * * output like this * ``` * function myFunction(x, y){ * const a = 25 * let b = x + y * b += a * b /= 4 * b -= 5 * return b * 42 * } * ``` * * special attention may need be done for ++ * and -- increment decrement operators * */ #include using namespace std; string prettify(const string source) { string s = source; const string symbols = "-+=*%,/"; size_t pos = s.find_first_of(symbols); size_t next; bool process; while(pos != string::npos) { process = s.substr(pos,2).compare("++") && s.substr(pos,2).compare("--"); if(process) { if (s[pos] != ',') s.insert(pos++," "); next = s.find_first_not_of(symbols,pos); if (next == string::npos) break; s.insert(next," "); // ++ or -- } else { next = pos + 2; } pos = s.find_first_of(symbols,next); } return s; } int main() { const string code = R"( function myFunction(x,y){ const a=25 let b=x+y b+=a b/=4 b-=5 b++ --b return b*42 })"; cout << "Original code : " << endl << code << endl << endl; cout << "Prettified code : " << endl << prettify(code) << endl; return 0; }

[challenge] proper spacing