AVR Freaks

One thing ..the output of adc is stored in register ADCH and ADCL ...so now i can read these registers in binary form ...so i am using bit () now but i want to get the values like 263, 150, 500 on moving the knob of potentiometer .
So what should i do ...
U r suggesting me to convert it directly to ascii??
And sprintf() is used for strings ??? How can i use here

here is the code

/*
 * GccApplication4.cpp
 *
 * Created: 1/3/2020 1:30:55 PM
 * Author : kunal
 */ 

#include <avr/io.h>
#include <util/delay.h>
void UART_Init();
void UART_TxChar(char data);
char UART_RxChar();
void bit(uint8_t val);
void printString( char myString[]);
void USART_bindec(uint8_t val);
void bindec(int16_t x);

void UART_Init()
{
    UBRR0L = 103;
    UCSR0B = (1<<TXEN0)|(1<<RXEN0);
    UCSR0C = (1<<UCSZ00)|(1<<UCSZ01);
}

void UART_TxChar(char data)
{
    while((UCSR0A & (1<<UDRE0))==0);
    UDR0 = data;
    
}

char UART_RxChar()
{
    while( (UCSR0A & (1<<RXC0))==0);
    return UDR0;

}

void bit(uint8_t val)
{
    int8_t ptr;
    for(ptr=7;ptr>=0;ptr--)
    {
        if ((val & (1<<ptr))==0)
        {
            UART_TxChar('0');
        }
        else
        {
            UART_TxChar('1');
        }
    }
}
  void printString(  char myString[])      /////to print any string
  {
      int i = 0;
      while (myString[i])
      {
          UART_TxChar(myString[i]);
          i++;
      }
  }
  void bindec(int16_t x)
  { 
      char dec;
      uint8_t wei=1;
      while(x!=0)
    {   dec=dec+((x%10)*wei);
        x=x/10;
        wei=wei*2;
        UART_TxChar(dec);
    }
      //printString(dec);
  }
  
      
  
int main(void)
{UART_Init();
    ADCSRA=0x87;
    ADMUX=0b01100000;
  
    while (1) 
    { ADCSRA|=(1<<ADSC);
      while((ADCSRA&(1<<ADIF))==0);
     bit(ADCL);
     bindec(ADCL);
    printString("\n");
     bit(ADCH);
     bindec(ADCH);
     printString("\n");
   _delay_ms(5000);

    } 
    return 0;
}

on doing so ADCW is an 16 bit variable so it is also storing the unused 6 bits of the ADC output . and now when i am printing the value of ADCW it is varying from  -32225 to +32225

.but i want my values to vary from +1024  to -1024 as in the end my final result is of only 10 bit (as lest 6 bits or right 6 bits are unused).

suggestions???????

int sprintf(char * __s,const char * __fmt, ... )

sends the formatted characters to string s.

this is defination of sprintf () i found on the given link .

but the arguments for sprintf() which u have written in the code and arguments written on link are different ... so i didnt understand how is sprintf() working.

or here in code my formatted character is ADCW and string to which it is send is sbuff.