#include <stdio.h>#include <unistd.h>#include <termios.h>#include <term.h>#include <curses.h>static FILE *output_stream = (FILE *)0;char *menu[] = {    "a - add new record",    "d - delete record",    "q - quit",    NULL,};int getchoice(char *greet, char *choices[], FILE *in, FILE *out);int char_to_terminal(char char_to_write);int main(){    int choice = 0;    FILE *input;    FILE *output;    struct termios initial_settings, new_settings;    if (!isatty(fileno(stdout))) {        fprintf(stderr,"You are not a terminal, OK.\n");    }    input = fopen("/dev/tty", "r");    output = fopen("/dev/tty", "w");    if(!input || !output) {        fprintf(stderr, "Unable to open /dev/tty\n");        exit(1);    }    tcgetattr(fileno(input),&initial_settings);    new_settings = initial_settings;    new_settings.c_lflag &= ~ICANON;    new_settings.c_lflag &= ~ECHO;    new_settings.c_cc[VMIN] = 1;    new_settings.c_cc[VTIME] = 0;    new_settings.c_lflag &= ~ISIG;    if(tcsetattr(fileno(input), TCSANOW, &new_settings) != 0) {        fprintf(stderr,"could not set attributes\n");    }    do {        choice = getchoice("Please select an action", menu, input, output);        printf("You have chosen: %c\n", choice);    } while (choice != 'q');    tcsetattr(fileno(input),TCSANOW,&initial_settings);    exit(0);}int getchoice(char *greet, char *choices[], FILE *in, FILE *out){    int chosen = 0;    int selected;    int screenrow, screencol = 10;    char **option;    char *cursor, *clear;    output_stream = out;    setupterm(NULL,fileno(out), (int *)0);    cursor = tigetstr("cup");    clear = tigetstr("clear");    screenrow = 4;    tputs(clear, 1, char_to_terminal);    tputs(tparm(cursor, screenrow, screencol), 1, char_to_terminal);    fprintf(out, "Choice: %s", greet);    screenrow += 2;    option = choices;            while(*option) {        tputs(tparm(cursor, screenrow, screencol), 1, char_to_terminal);        fprintf(out,"%s", *option);        screenrow++;        option++;    }    do {        selected = fgetc(in);        option = choices;        while(*option) {            if(selected == *option[0]) {                chosen = 1;                break;            }            option++;        }        if(!chosen) {            tputs(tparm(cursor, screenrow, screencol), 1, char_to_terminal);            fprintf(out,"Incorrect choice, select again\n");        }    } while(!chosen);    tputs(clear, 1, char_to_terminal);    return selected;}int char_to_terminal(char char_to_write){    if (output_stream) putc(char_to_write, output_stream);    return 0;}