以下是一个在VC++下编写的车辆收费系统，根据需要必须用TC++进行编译，谁能告诉我应该做怎样的改动？


头文件:
#include "iostream.h"
namespace traff
{
class sum
{
int num;
int fee;
public:
sum();
void process(int change);
void display();
~sum();
};
}


cpp1.cpp文件
#include "sum.h"

using namespace std;

namespace traff
{
sum::sum()
    {
    num=0;
    fee=0;
    }
void sum::process(int change)
    {
    num=num+1;
    fee=fee+change;
    }
void sum::display()
    {
    cout <<"车辆总计:";
    cout <<endl;
    cout <<num;
    cout <<endl;
    cout <<"收费总计:";
    cout <<endl;
    cout <<fee;
    cout <<endl;
    }
sum::~sum()
{
;
}
}



主程序文件：
#include "cpp1.cpp"
#include "sum.h"


void proc(sum &car,sum &bus,sum &truck,sum &s)
{
    cout <<"选择车型："<<endl<<"1 小轿车    2 卡车    3公共汽车"<<endl;
        int type;
        cin >>type;
        cin.get();
        cout <<"收费:";
        int change;
        cin >>change;
        cin.get();
        switch (type)
        {
        case 1:
            car.process(change);
            s.process(change);
            break;
        case 2:
            truck.process(change);
            s.process(change);
            break;
        case 3:
            bus.process(change);
            s.process(change);
            break;
        default:
            break;
        }

}
void disp(sum &car,sum &bus,sum &truck,sum &s)
{
cout <<"选择车型："<<endl<<"1 小轿车    2 卡车    3 公共汽车    4 总计"<<endl;
int type;
cin >>type;
cin.get();
switch (type)
        {
        case 1:
            car.display();
            break;
        case 2:
            truck.display();
            break;
        case 3:
            bus.display();
            break;
        case 4:
            s.display();
            break;
        default:
            break;
        }
}

int main()
{
cout <<"欢迎使用本系统！"<<endl;
sum car;
sum truck;
sum bus;
sum s;
int i;
for(i=0;i<10;i++)
    {
    cout <<"选择您要使用的功能："<<endl;
    cout <<"1 收费    2查看    3退出"<<endl;
    int a;
    cin >>a;
    cin.get();
    switch(a)
        {
        case 1:
            {
            proc(car,bus,truck,s);
            i=1;
            break;}
        case 2:
            {
            disp(car,bus,truck,s);
            i=1;
            break;}
        case 3:
            i=11;
            break;
        default:
            i=1;
            break;
        }
    }
cout <<"欢迎使用本系统！"<<endl<<"再见！"<<endl;
return 0;
}