/*  At the start of this program, we initialize the pad structure    and then create a pad, which returns a pointer to that pad.    We add characters to fill the pad structure    (which is 50 characters wider and longer than the terminal display.  */#include <unistd.h>#include <stdlib.h>#include <curses.h>int main() {    WINDOW *pad_ptr;    int x, y;    int pad_lines;    int pad_cols;    char disp_char;    initscr();    pad_lines = LINES + 50;    pad_cols = COLS + 50;    pad_ptr = newpad(pad_lines, pad_cols);    disp_char = 'a';    for (x = 0; x < pad_lines; x++) {        for (y = 0; y < pad_cols; y++) {            mvwaddch(pad_ptr, x, y, disp_char);            if (disp_char == 'z') disp_char = 'a';            else disp_char++;        }    }/*  We can now draw different areas of the pad on the screen at different locations    before quitting.  */    prefresh(pad_ptr, 5, 7, 2, 2, 9, 9);    sleep(1);    prefresh(pad_ptr, LINES + 5, COLS + 7, 5, 5, 21, 19);    sleep(1);    delwin(pad_ptr);    endwin();    exit(EXIT_SUCCESS);}