补码超出怎么改下？

过默

1. #include <iostream>
   
2. #include <windows.h>
   
3. 
   
4. #define FULL_GAS 85
   
5. 
   
6. class Car{
   
7. 
   
8. public:
   
9. unsigned int gas_tank;
   
10. unsigned int wheel;
    
11. 
    
12. int running(void);
    
13. void fallTank(int liter);
    
14. void wanning(void);
    
15. };
    
16. 
    
17. void Car::fallTank(int liter)
    
18. {
    
19. gas_tank += liter;
    
20. }
    
21. 
    
22. int Car::running(void)
    
23. {
    
24. std::cout <<"每小时 120速度行驶。。。。越过那高山 越过那流水...\n";
    
25. gas_tank--;
    
26. std::cout << "当前还剩 " << 100*gas_tank/FULL_GAS << "%" << "油量!\n";
    
27. return gas_tank;
    
28. }
    
29. 
    
30. void Car::wanning(void)
    
31. {
    
32. std::cout << "WANNING!!" << "还剩" << 100*gas_tank/FULL_GAS << "%" << "油量!\n";
    
33. }
    
34. int main()
    
35. {
    
36. Car mycar;
    
37. char i;
    
38. mycar.gas_tank = FULL_GAS;
    
39. while(mycar.running())
    
40. {
    
41. if(mycar.running() < 10)
    
42. {
    
43. mycar.wanning();
    
44. std::cout<< "请问还要运行吗？(Y/N)\n";
    
45. std::cin>>i;
    
46. if('Y'==i || 'y'==i)
    
47. {
    
48. mycar.fallTank(FULL_GAS);
    
49. }
    
50. }
    
51. }
    
52. return 0;
    
53. }

复制代码

只是丶梦

:dizzy:额....补码超出什么意思..

过默

就是输出N不加油， 超出了