8051 storing password in array

                                    //numair registeration # is 782
              //saeed registeration # is 287
             //numair password is 456
             //saeed passwords is 123

//char nreg[3]={'7','8','2'};
//char ncreg[3];
//int strcmp(char *s1,char *s2);
///unsigned int npass[3]={4,5,6};
///unsigned int ch[3];
unsigned int f,digit[3]={0,0,0},nreg[3]={7,8,2};
unsigned char i=0,j=0;
void reg();
void pass();
void check();
void Lcd_Init();
//void display(char p,char v);





// Lcd module connections
sbit LCD_RS at P2_0_bit;
sbit LCD_EN at P2_1_bit;

sbit LCD_D4 at P2_2_bit;
sbit LCD_D5 at P2_3_bit;
sbit LCD_D6 at P2_4_bit;
sbit LCD_D7 at P2_5_bit;
// End Lcd module connections




void main() {

//P1=0x00;  //PORT 1 is at sink
//P3=0x00;  //PORT 3 is at sink
//S:
p1=0x00;
p3=0x00;


Lcd_Init();                              // Initialize Lcd
  Lcd_Cmd(_LCD_CLEAR);                     // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);                // Cursor off
LCD_OUT(1,1,"ENTER REG. #");

  while(1)
          {
          Lcd_Cmd(_LCD_CLEAR);                     // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);                // Cursor off
LCD_OUT(1,1,"ENTER REG. #");

////////push buttons FUNCTIONS START////////////////
reg();//ENTER REGISTERATION NUMBER

//check();
          }

}

void reg()         //function for registeration number
{

         for(i=0;i<3;i++)
         {
         while( p1.b0!=1 && p1.b1!=1 && p1.b2!=1 && p1.b3!=1 && p1.b4!=1 && p1.b5!=1 && p1.b6!=1 && p1.b7!=1 && p3.b0!=1 && p3.b1!=1 && p3.b2!=1 && p3.b3!=1 && p3.b4!=1 && p3.b5!=1 && p3.b6!=1 && p3.b7!=1); //wait for any key to be pressed
          if(p1.b0==1)
                 {
                 //f=0;
                 digit=0;       //put 0 in digit
                 Lcd_Out(2,i+1,"0"); //LCD OUT =0
                 while(p1.b0!=0);
                 }

          else if(p1.b1==1)
                 {
                 //f=1;
                 digit=1;    //put 1 in digit
                 LCD_OUT(2,i+1,"1");  //LCD OUT =1
                 while(p1.b1!=0);
                 //f=0;
                 }

          else if(p1.b2==1)
                 {
                 //f=2;
                 digit=2;     //put 2 in digit
                 LCD_OUT(2,i+1,"2");  //LCD OUT =2
                 while(p1.b2!=0);
                 //f=0;
                 //ncreg=2;
                 }

          else if(p1.b3==1)
                 {
                 //f=3;
                 digit=3;        //put 3 in digit
                 LCD_OUT(2,i+1,"3");//LCD OUT =3
                 while(p1.b3!=0);
                 //f=0;
                 }

          else if(p1.b4==1)
                 {
                 //f=4;
                 digit=4; //put 4 in digit
                 LCD_OUT(2,i+1,"4");//LCD OUT =4
                 while(p1.b4!=0);
                 ///f=0;
                 }

          else if(p1.b5==1)
                 {
                 //f=5;
                 digit=5;//put 5 in digit
                 LCD_OUT(2,i+1,"5");//LCD OUT =5
                 while(p1.b5!=0);
                 //f=0;
                 }

          else if(p1.b6==1)
                 {
                 //f=6;
                 digit=6;  //put 6 in digit
                 LCD_OUT(2,i+1,"6");//LCD OUT =6
                 while(p1.b6!=0);
                 //f=0;
                 }

          else if(p1.b7==1)
                 {
                 //f=7;
                 digit=7;   //put 7 in digit
                 LCD_OUT(2,i+1,"7");//LCD OUT =7
                 while(p1.b7!=0);
                }

          else if(p3.b0==1)
                 {
                 //f=8;
                 digit=8;    //put 8 in digit
                 LCD_OUT(2,i+1,"8");//LCD OUT =8
                 while(p3.b0!=0);
                 //f=0;
                 //ncreg=8;
                 }

          else if(p3.b1==1)
                 {
                 //f=9;
                 digit=9;   //put 9 in digit
                 LCD_OUT(2,i+1,"9");//LCD OUT =9
                 while(p3.b1!=0);
                 //f=0;
                 }

       //   else if(p3.b2==1)
         //        {
                 //f=10;
                 //='*';
           //      LCD_OUT(2,i+1,"*");//LCD OUT = * (10 for *)
             //    while(p3.b2!=0);
                 //f=0;
               //  }

         // else if(p3.b3==1)
                 {
                 //f=20;
                 //ar='#';
             //    LCD_OUT(2,i+1,"#");  //LCD OUT = #
           //      while(p3.b3!=0);
                 //f=0;
               //  }
          }
//now here is problem i guess:( please help... please please
       Lcd_Cmd(_LCD_CLEAR);
       Lcd_Out(1,1,digit[]);
       delay_ms(1000);




                          //for(j=0;j<3;j++)
                          //{        // if(nreg.toString[] == comp.toString[])
                                //if(nreg[j]=ar[j])// && (nreg[3]==comp[3]))// && //(nreg[2]==comp[3]))
                                 //{
                                // Lcd_Cmd(_LCD_CLEAR);
                                 //Lcd_Out(1,j,'ar[j]');
                                 //delay_ms(1000);
                                 //}
                                //else
                                 //{

                                //Lcd_Out(1,2,digit[2]);
                                //delay_ms(1000);
                                //Lcd_Out(1,3,digit[3]);
                                // delay_ms(1000);
                                  //}
}
}                     //}