ADS1100 16-bit ADC with MikroC

void i2c_rx_highbyte (){
   data_dir=1;        // receiving bit
   
   for(k=1;k<9;k++){
     buffer=0x00;
     sclk=1;
     delay();
     highbyte=highbyte+((buffer+sda)>>k);   // MSB first
     sclk=0;
     delay();
   }

     sclk=1;
     delay();                   // wait for ACK
     if (sdata==0){             // if ADS1100 pulls SDA low upon the next clock, it acknowledges the written byte
      delay();
      sclk=0;                   // pull the clock down
     }
}

void i2c_tx (unsigned int j){    // transmitting data to ADS1100
   data_dir=0;          // j is the data to be sent


   for(k=0;k<8;k++)
   {
     sclk=0;
     delay();
     if((j<<k)&& 0x80==0x80){
     sdata=1;    // output high on data out (nth bit high = data)
     }
     else sdata=0;
     delay();
     sclk=1;
     delay();
   }
   delay();
     
     data_dir=1;
     sclk=1;
     delay();                   // wait for ACK
     if (sdata==0){             // if ADS1100 pulls SDA low upon the next clock, it acknowledges the written byte
      delay();
      sclk=0;                   // pull the clock down
     }
}

unsigned short int x_, highbyte, lowbyte;
    
     Soft_I2C_Start();
     Soft_I2C_Write(0x91);
     highbyte=Soft_I2C_Read(1);
     lowbyte=Soft_I2C_Read(0);
     Soft_I2C_Stop();


x_ = highbyte;    // display highbyte only
*transform into digits via LCD*

x_ = highbyte*256+lowbyte;