Faire un Chrono timout

#include <ncurses.h>
#include <string>
#include <vector>
#include <iostream>
#include <ctime>

int main(void) {
    std::string str;
    std::vector<std::string> sv;

    initscr();
    keypad(stdscr, TRUE);
    nodelay(stdscr, TRUE);

    addstr("Type strings during 30 seconds (press ENTER to finish the string)\n");
    move(5, 0);
    std::clock_t start;

    while (1) {
        char ch;

        ch = getch();
        if (ch != ERR) {
            if (ch != 10) {
                str.push_back(ch);
            } else {
                sv.push_back(str);
                str.clear();
                clrtoeol();
            }
            refresh();
        }
        if ( (( std::clock() - start ) / (double) CLOCKS_PER_SEC) > 30 )
            break;
    }
    nodelay(stdscr, FALSE);
    endwin();

    std::cout << "You typed the following strings:" << std::endl;
    for(std::string s : sv) {
        std::cout << s << std::endl;
    }

    return 0;
}

-lncurses