#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <conio.h>

/*
dkchoice /c[:]Choices /n /s [msg]

*/

int main(int argc,char **argv)
{
    int c;
    char *p;
    char *q;

    if ( argc < 3 ) {
        printf("dkchoice /c[:]Choices /n /s [msg]\n");
        return 255;
    }
    q = argv[1] + 2;
    if ( *q == ':' ) q++;
    if ( argc >= 5 ) {
        printf("%s",argv[4]);
    }
    do {
        c = getch();
        if ( c == 0 ) {
            c = getch();
            c = 0;
        } else if ( c == 3 ) {
            printf("^C\n");
            return 0;
        }
        p = strchr(q,c);
    } while ( c == 0 || p == NULL );
    printf("%c\n",c > ' ' ? c : ' ');
    return p - q + 1;
}