Displaying ADC result on GLCD with C18

#include <p18f2520.h>
#include <GLCD.h>
#include <adc.h>
#include <delays.h>
#include <stdlib.h>

#pragma config WDT = OFF, LVP = OFF, OSC = INTIO67

void main (void){
	int read;
	char adc_ret[10];
	
	ADCON1 = 0x0d;
	CMCON = 0x07;		// no comparators
	OSCCON = 0x70;
	TRISA = 0XFF;
	TRISC = 0x00;	
	
	//Setup
	Init_GLCD();
	OpenADC(ADC_FOSC_RC & ADC_LEFT_JUST & ADC_12_TAD,
		ADC_CH1 & ADC_INT_OFF & ADC_VREFPLUS_VDD & 
			ADC_VREFMINUS_VSS, 13);
	SetChanADC( ADC_CH1 );

	PutMessage((rom char*)"test");
	Delay10KTCYx(200);

	while (1){
		ConvertADC(); // Start conversion
		while( BusyADC() ); // Wait for completion
		
		read = 523;ReadADC();
		itoa(read,adc_ret);
		PutMessage((rom char*)adc_ret);
		Delay10KTCYx(250);
		SetPos(0,0);	
	}
        //This section of code works, I used it check ADC function
	/*ConvertADC();
	while(BusyADC());
	i = ReadADC();
	if(i<125)PORTC = 0b00000001;
	else if(i>126 && i<250)PORTC = 0b00000011;
	else if(i>251 && i<375)PORTC = 0b00000011;
	else if(i>376 && i<400)PORTC = 0b00000111;
	else if(i>401 && i<525)PORTC = 0b00001111;
	else if(i>526 && i<650)PORTC = 0b00011111;
	else if(i>651 && i<750)PORTC = 0b00111111;	
	else if(i>751 && i<875)PORTC = 0b01111111;
	else if(i>876 && i<1023)PORTC = 0b11111111;
	*/
}

    while (1){
        ConvertADC(); // Start conversion
        while( BusyADC() ); // Wait for completion
        read = 523;ReadADC();
        itoa(read,adc_ret);
        pos=0;
        while(adc_ret[pos])
            PutChar(adc_ret[pos++]);
        Delay10KTCYx(250);
        SetPos(0,0);    
    }

    while (1){
        ConvertADC(); // Start conversion
        while( BusyADC() ); // Wait for completion
        read = 523;ReadADC();
        itoa(read,adc_ret);
        [COLOR="Blue"]SetPos(0,16-strlen(adc_ret));[/COLOR]
        pos=0;
        while(adc_ret[pos])
            PutChar(adc_ret[pos++]);
        Delay10KTCYx(250);
        SetPos(0,0);    
    }