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

int Rubl_1 = 0,Rubl_2 = 0,Cancel = 0;
enum signals { RUBL_1, RUBL_2, CANCEL, NONE};


void GetUserSignal(void)
{
    char Choice;
    while(1)
    {
        printf("1.Put 1 rubl\n2.Put 2 rubl\n0.Cancel\n");
        Choice = _getch();
        switch(Choice)
        {
            case '1': Rubl_1=1; return;
            case '2': Rubl_2=1; return;
            case '0': Cancel=1; return;
        }
    }
 }

int main()
{
    enum states { READY, PREPFRE, WAIT, CHANGE, RETURN } state = READY;
//    enum signals signal;
    while (1)
    {
        switch (state)
        {
            case READY:
                printf("Ready\n");
                GetUserSignal();
                if(Rubl_2) 
                    state = PREPFRE;
                if(Rubl_1) 
                    state = WAIT;
            break;
            case PREPFRE:
                printf("Preapare cofee\n");
                state = READY;
            break;
            case WAIT:
                printf("Wait\n");
                GetUserSignal();
                if(Rubl_2) 
                    state = CHANGE;
                if(Rubl_1) 
                    state = PREPFRE;
                if(Cancel) 
                    state = RETURN;
            break;
            case CHANGE:
                printf("Change 1 Rubl\n");
                state = PREPFRE;
            break;
            case RETURN:
                printf("Change 1 Rubl\n");
                state = READY;
            break;
        }
        Rubl_1 = 0;
        Rubl_2 = 0;
        Cancel = 0;
    }
    return 0;
}