Programming

CString str1;
	CEdit *ptr1;
	double d; 
	
	
	unsigned long port = 0;
	unsigned char num1 = 0;
	unsigned char num2 = 0;
	unsigned char data = 0;
	unsigned char tempdata = 0;
	unsigned char check = 0;
	unsigned char begin_state;
	unsigned char l =0;

	ptr1= (CEdit*)GetDlgItem(DutyCycle);
	ptr1 -> GetWindowText(str1);
	d=atoi(str1);
	l = (unsigned char)d;

	tempdata = l & 15;
	check = tempdata/8;
	begin_state = check;
	int i=0;
	

	while (i<3)
	{
		ptr1= (CEdit*)GetDlgItem(DutyCycle);
		ptr1 -> GetWindowText(str1);
		d=atoi(str1);
		l = (unsigned char)d;

		tempdata = l & 15;
		check = tempdata / 8;

		unsigned char y2=0;
		unsigned char y3=0;

		y2 = l & 7;		
		y3 = l & 240;
   		y3 = y3 >> 1;
		num1 = y2 + y3;
		i++;
		CString S;
    	        S.Format("%d",num1);
		MessageBox("first number ="+ S);
		begin_state = check;

		while(check = begin_state)
		{	
			ptr1= (CEdit*)GetDlgItem(DutyCycle);
			ptr1 -> GetWindowText(str1);
			d=atoi(str1);
			l = (unsigned char)d;
			tempdata = l & 15;
			check = tempdata/8;
			if(check != begin_state)
			{break;}

		}

		CString S2;
    	        S2.Format("%d",check);
		MessageBox("bit3 ="+ S2);

		while(check != begin_state)
			{	
				ptr1= (CEdit*)GetDlgItem(DutyCycle);
				ptr1 -> GetWindowText(str1);
				d=atoi(str1);
				l = (unsigned char)d;
				tempdata = l & 15;
				check = tempdata/8;
				if(check == begin_state)
				{break;}

			}
			CString S3;
    		S3.Format("%d",check);
			MessageBox("bit3 ="+ S3);
		if(check == begin_state)
			 {
				y2 = l & 7;		
				y3 = l & 240;
   				y3 = y3>>1;
				num2 = y2 + y3;
				i++;

				CString S4;
    			S4.Format("%d",num2);
				MessageBox("second number ="+ S4);

				CString S5;
    				
				if(num1 >= num2)
					{
					 i++;

				   	 S5.Format("%d",num1);
					 MessageBox("the larger is ="+ S5);
					 

					}

				else
					{	
						i++;

						S5.Format("%d",num1);
						MessageBox("the larger is ="+ S5);
						
					}
				
				
			}
		
	}