T13

#line 1 "C:/Users/bunthit/Desktop/TEST 1/T13.c"
void main()
{
 unsigned char num[4];
 unsigned char input[4];
 unsigned char a,b;
 unsigned char keypad[]={0,1,2,3,0,
 4,5,6,0,
 7,8,9,0,
 0,0,0,0};
 unsigned int kp,i,j;
 TRISC=0;
 TRISD=0xFF;
 Lcd_Init(&PORTC);
 Keypad_Init(&PORTD);
 Lcd_Cmd(LCD_CURSOR_OFF);
 Lcd_Cmd(LCD_CLEAR);
 Lcd_Out(1,1,"Enter 4 numbers");
 for(i=0;i<4;i++)
 {
 while(!Keypad_Read());
 kp=Keypad_Read();
 num[i]=keypad[kp];
 Lcd_Chr(2,i+1,keypad[kp]+48);
 while(Keypad_Read());
 }
 while(Keypad_Read()!=15);
 Return:Lcd_Cmd(LCD_CLEAR);
 Lcd_Out(1,1,"What are 4 numbers?");
 while(Keypad_Read());
 for(i=0;i<4;i++)
 {
 while(!Keypad_Read());
 kp=Keypad_Read();
 input[i]=keypad[kp];
 Lcd_Chr(2,i+1,keypad[kp]+48);
 while(Keypad_Read());
 }
 while(Keypad_Read()!=15);
 Lcd_Cmd(LCD_CLEAR);
 while(Keypad_Read());
 for(i=0;i<4;i++)
 {
 if(input[i]==num[i])
 {
 a++;
 continue;
 }
 for(j=0;j<4;j++)
 {
 if(input[i]==num[j])b++;
 }
 }
 Lcd_Chr(1,1,a+48);
 Lcd_Chr(1,2,'A');
 Lcd_Chr(1,3,b+48);
 Lcd_Chr(1,4,'B');
 if(a==4)Lcd_Out(2,1,"Correct");
 else
 {
 Lcd_Out(2,1,"Wrong!");
 a=0;b=0;
 while(Keypad_Read()!=15);
 goto Return;
 }
}