[PIC] Problem with identifiers!

Code C - [expand]
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unsigned int temp_res;
                     void main()
                      {
 ADCON1 = 8;
       CMCON=0x07;           // Configure other AN pins as digital I/O
  TRISA  = 0xFF;              // PORTA is input
  TRISC  = 0;                 // PORTC is output
  TRISB  = 0;                 // PORTB is output  do {
    temp_res = ADC_Read(2);   // Get 10-bit results of AD conversion
    PORTB = temp_res;         // Send lower 8 bits to PORTB
    PORTC = temp_res >> 8;    // Send 2 most significant bits to RC1, RC0
  } while(1);}

Code C - [expand]
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unsigned int adc;     // Variable to save ADC value
 void main()      // Start of Main function
{
    CMCON = 0x07;     // Disable Comparators
 
         ADCON1 = 0x80;    // For ADC Module configuration
          TRISA = 0xFF;    // PORTA is input (ADC Input)
           TRISB = 0x00;    // PORTB is output
            TRISC = 0x00;    // PORTC is Output
      do
     {
       adc = ADC_Read(1);  // Get 10-bit results of AD conversion of channel 1
       PORTB = adc;        // Send lower 8 bits to PORTB
        PORTC = adc >> 2;   // Send 2 most significant bits to RC7, RC6
     }
        while(1);
}