I need help bad!!!

Hey wasup guys, this is my first post so please be kind =0). This is my first programming class and i'm having a really hard time. The professor at my university is really hard to understand and so making this almost impossible for me. As for the program, the user enters a mem_id(a or b) and the # of years they are in this org. Display the result and there's a few if statsment, such as if he enters like mem_id a and been with the org for >5 yrs, he owes like 2000, but if he has only been with the org for <5, then he owes 1000. something like that, here is what i did, can somebody please, help me, thanks a million =0)

Code:

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#include <iostream.h>
#include <iomanip.h>

char Get_Member_Type();
int Years();
int Dues();
void Display_Member_Info();

int main()
{

       
       

return 0;
}

char Get_Member_Type()
{
        char type;
        cout << "\nPlease Enter I or F";
        cin >> type;

        return type;
}

int Years()
{
        int numbers = 0;
        cout << "\nPlease enter number of years";
                cin >> numbers;

        return numbers;
}

int Dues(char type, int numbers);
{
        int results;
                if ((char type == 'F') && (numbers > 3));
                        results = 2400;
                else
                        ((char type =='F') && (numbers < 3));
                        results = 3000;


                        if ((char type == 'I') && (numbers >5));
                                results = 1500;
                                else
                                        ((char type == 'I') && (numbers < 5));
                                results = 1900;

                                return results;
}

void Display_Member_Info(char type, int Years, int results)
{
        cout << "\nYou have been a member for:  " << Years;
        cout << "\nYour membership type is:  " << type;
        cout << "\nYou fee is:  "  << results;

        return ;
}

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&#91;code]&#91;/code]tagged by Salem