Function: strol

/*I can't seem to safely delete unused variables and strol doesn't seem to work?*/
/*am using Salford Plato V2.17*/

#include <iostream.h>
#include <clib.h>

class SegAdr
{
        private:
        unsigned short int Offset,Segment;

        public:
        SegAdr(unsigned short int a,unsigned short int b);
        SegAdr(unsigned short int a);

        virtual ~SegAdr();

        unsigned short int GetSeg(void);
        unsigned short int GetOff(void);
        void OutputHex(unsigned short int);
        unsigned short int Input(void);

};

        SegAdr::SegAdr(unsigned short int a,unsigned short int b)
        {
        Segment = a;
        Offset = b;
        }

        SegAdr::SegAdr(unsigned short int a)
        {
        Segment = a;
        }

        SegAdr::~SegAdr()
        {

        }

        unsigned short int SegAdr::GetSeg(void)
        {
          return Segment;
        }

        unsigned short int SegAdr::GetOff(void)
        {
          return Offset;
        }


//takes a 4 digit hex number and turns it into a 16 bit number
        void SegAdr::OutputHex(unsigned short int a)
        {
        unsigned short int w,x,y,z;
        char values[16]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
        w = a & 0b0000000000001111;
        x = a & 0b0000000011110000;
        x=(x >> 4);
        y = a & 0b0000111100000000;
        y=(y >> 8);
        z = a & 0b1111000000000000;
        z=(z >> 12);

        cout<<values[z]<<values[y]<<values[x]<<values[w];

        }
//Takes 16 bit number and converts it to 4 digit hexi number
        unsigned short int SegAdr::Input(void)
        {
//doesn't seem to work if you delete w,x,y?        
        char w,x,y,z;
        char v[4],*c[4];
        unsigned short int a[4],b;
        int i,count=0;

        char values[22]={'0','1','2','3','4','5','6','7',
        '8','9','A','B','C','D','E','F','a','b','c','d','e','f'};
        cout<<"Please input hex address: "<<endl;
        while (count<=3)
          {
          z=getch();

          for (i=0;i<=22;i++)
            {

            if (z==values[i])
            {
            putchar(z);
            c[count]=&v[count];
            v[count]=z;
            a[count]=strtol(c[count],NULL,16);
//strol seems to have some kind of weird cumulative error?
            cout<<a[count]<<"a"<<endl;
            count++;
           
            }
          }
        }

        b = a[0];
        b=(b << 4);
        b = b+a[1];
        b=(b << 4);
        b = b+a[2];
        b=(b << 4);
        b = b+a[3];
       
        return b;

        }

main ()
{
        char d;
        while (d!='q')
        {
        unsigned short int c,v;
        /*cout<<"Please input number to convert into hex:";
        cin>>c;*/
        SegAdr n1(c);
        v=n1.Input();
        n1.OutputHex(v);

d=getch();
}
return 0;
};