// NOTE: Try this on your computer. // This is an example that cannot work as intended on this app. #include #include #include #include #include int main() { time_t timeBegin, timeEnd, timeLimit = 20, prevTimeRemaining = 0; std::string buffered, prompt; bool theEnd = false, limitExceeded = false, screenNeedsUpdate = false; timeBegin = time(nullptr); while ( !theEnd ) { timeEnd = time(nullptr); prompt = "Enter something to print to screen (in " + std::to_string((int)(timeLimit - difftime(timeEnd, timeBegin))) + " seconds): " + buffered; if ( prevTimeRemaining != timeLimit - difftime(timeEnd, timeBegin) ) { prevTimeRemaining = timeLimit - difftime(timeEnd, timeBegin); screenNeedsUpdate = true; } if ( screenNeedsUpdate ) { // "Clear" the screen. if ( system(NULL) ) system("cls"); std::cout << prompt; screenNeedsUpdate = false; } if ( kbhit() ) { char c = getch(); if ( c == 8 ) // Backspace key. { if ( buffered.length() > 0 ) { buffered.pop_back(); screenNeedsUpdate = true; } } else if ( c != 13 ) // Enter key. { buffered.push_back(c); screenNeedsUpdate = true; } else { std::cout << std::endl; theEnd = true; } } if ( difftime(timeEnd, timeBegin) >= timeLimit ) { theEnd = true; limitExceeded = true; } } if ( limitExceeded ) std::cout << "\nYou failed to enter something in given time.\n"; else { if ( buffered.length() == 0 ) std::cout << "You entered nothing." << std::endl; else std::cout << "You entered: " << buffered << std::endl; } }

Enter an input in a given time