Programming

#include <curses.h>
void putch(WINDOW *scr, int x, int y, char c, attr_t a) {
        mvwaddch(scr, y, x, c | a);
}
void putstr(WINDOW *scr, int x, int y, const char *c, int len, attr_t a) {
        wmove(scr, y, x);
        int index;
        for (int index = 0; index < len; index++) {
                char curc = c[index];
                waddch(scr, curc | a);
        }
}
void drawscr(WINDOW *scr) {
        werase(scr);
        int y = 1;
        int x;
        for (x = 1; x < (COLS - 1); x++) {
                putch(scr, x, y, ' ', A_REVERSE);
        }
        x--;
        for (y = y + 1; y < (LINES - 1); y++) {
                putch(scr, x, y, ' ', A_REVERSE);
        }
        y--;
        for (x = x - 1; x > 0; x--) {
                putch(scr, x, y, ' ', A_REVERSE);
        }
        x++;
        for (y = y - 1; y > 0; y--) {
                putch(scr, x, y, ' ', A_REVERSE);
        }
        char str[] = "This is a string!";
        putstr(scr, 10, 4, str, 17, A_BOLD);
        putstr(scr, 10, 6, str, 17, A_REVERSE);
        putstr(scr, 10, 8, str, 17, A_UNDERLINE);
        mvwaddstr(scr, 10, 10, str);
        putstr(scr, 10, 12, str, 17, A_REVERSE | A_BOLD);
        putstr(scr, 10, 14, str, 17, A_BOLD | A_UNDERLINE);
}
int main() {
        WINDOW *mainscr = initscr();
        cbreak();
        noecho();
        keypad(mainscr, TRUE);
        drawscr(mainscr);
        refresh();
        int in = ' ';
        char buf[30];
        while (in != 'q') {
                in = wgetch(mainscr);
                if (in == 126) {  // ~ key (can't seem to get fn keys to work)
                        sprintf(buf, "%d x %d", COLS, LINES);
                        drawscr(mainscr);
                        mvwaddstr(mainscr, LINES-1, 0, buf);
                }
                refresh();
        }
        endwin();
        return 0;
}

winsize ws;
ioctl(0, TIOCGWINSZ, &ws);