C++ Class Problem

caterpiez

1. #include<iostream.h>
   
2. #include<windows.h>
   
3. 
   
4. void Colour(unsigned short);
   
5. 
   
6. class traffic
   
7. {
   
8.     public:
   
9.     void lightA();
   
10.     void lightB();
    
11.     void lightC();
    
12. 
    
13. };
    
14. 
    
15. void traffic::lightA()
    
16. {
    
17.     Colour(10);
    
18.     cout<<"O"<<endl;
    
19.     Colour (7);
    
20.     cout<<"O"<<endl;
    
21.     Colour (7);
    
22.     cout<<"O"<<endl;
    
23.     return;
    
24. }
    
25. void traffic::lightB()
    
26. {
    
27.     Colour(7);
    
28.     cout<<"O"<<endl;
    
29.     Colour (7);
    
30.     cout<<"O"<<endl;
    
31.     Colour (12);
    
32.     cout<<"O"<<endl;
    
33.     return;
    
34. }
    
35. void traffic::lightC()
    
36. {
    
37.     Colour(7);
    
38.     cout<<"O"<<endl;
    
39.     Colour (7);
    
40.     cout<<"O"<<endl;
    
41.     Colour (12);
    
42.     cout<<"O"<<endl;
    
43.     return;
    
44. }
    
45. 
    
46. int main()
    
47. {
    
48.     traffic l;
    
49.     Colour(15);
    
50.     cout<<"Road A"<<endl;
    
51.     l.lightA();
    
52.     Colour(15);
    
53.     cout<<"Road B"<<endl;
    
54.     l.lightB();
    
55.     Colour(15);
    
56.     cout<<"Road C"<<endl;
    
57.     l.lightC();
    
58.     return 0;
    
59. }
    
60. void Colour (unsigned short colour)
    
61. {
    
62. 
    
63.     HANDLE hcon = GetStdHandle (STD_OUTPUT_HANDLE);
    
64.     SetConsoleTextAttribute(hcon,colour);
    
65. }

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Sy nak buat simple traffic light simulation.masalahnya skrg sy xtahu macam mana control lampu tu ikut selang masa.


Contoh:
Road A:green Road B:red Road C:red
after 45 second
Road A:yellow Road b:red Road C:red
after 10 second
Road A:red Road B:green Road C:red
dan seterusnya...


Memandangkan skrg sy tgh belajar class & inheritance.So nak aplikasikan dalam coding nie.Sifu2 sekalian tolong beri tunjuk ajar

otai_g

nah ni ada cth sample program yg guna timing.
cuba la manipulate n combinekan dgn program kat atas tu.

1. 
   
2. /* clock example: countdown */
   
3. #include <iostream.h>
   
4. #include <stdio.h>
   
5. #include <time.h>
   
6. 
   
7. void wait ( int seconds )
   
8. {
   
9.   clock_t endwait;
   
10.   endwait = clock () + seconds * CLOCKS_PER_SEC ;
    
11.   while (clock() < endwait) {}
    
12. }
    
13. 
    
14. int main ()
    
15. {
    
16.   int n;
    
17.   cout<<"Starting countdown"<<endl;
    
18.   for (n=10; n>0; n--)
    
19.   {
    
20.     cout<<n<<endl;
    
21.     wait (1);
    
22.   }
    
23.   cout<<"FIRE!!!";
    
24.   return 0;
    
25. }
    

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notes.
lampu kuning guna no 14.
utk yg line void Colour (unsigned short colour) tu, knp kena guna data type unsigned short sedangkan nilai yg dihantar berupa interger iaitu 7 dan 12.sy rs lebih profesional kalo unsigned short ditukar kpd int sahaja.