#include <stdio.h>

int main(void) {
    unsigned char c;

    printf("Welcome to the game console selection helpdesk!\nDo you like video games? (y/n) ");
    c = getchar(); getchar();
    printf("You entered: '%c'\n", c);

    if (c == 'n') {
        printf("Our advise: buy a PC\n");
    }
    else if (c == 'y') {
        printf("Do you have any friends? (y/n) ");
        c = getchar(); getchar();
        printf("You entered: '%c'\n", c);

        if (c == 'n') {
            printf("Our advise: buy a PS3\n");
        }
        else if (c == 'y') {
            printf("Do you ever meet your friends off-line? (y/n) ");
            c = getchar(); getchar();
            printf("You entered: '%c'\n", c);

            if (c == 'n') {
                printf("Our advise: buy a Xbox360\n");
            }
            else if (c == 'y') {
                printf("Our advise: buy a Wii\n");
            }
        }
    }

    return 0;
}