MicroC

// Lcd pinout settings
sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D7 at RB3_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D4 at RB0_bit;

// Pin direction
sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D7_Direction at TRISB3_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D4_Direction at TRISB0_bit;

int input;

char txt1[10];
char txt2[10];

void main()
{
    ADCON1 = 0x80; //0b10000000
    TRISA = 0xFF;
    TRISC = 0;
    TRISD = 0;

    Lcd_Init();
    Lcd_Cmd(_LCD_CURSOR_OFF);

    while(1)
    {
        input = ADC_Read(0);

        IntToStr((input*5/1023.0)*1000, txt1);
        Lcd_Out(1,1,txt1); Lcd_Out(1,8,"mV");

        IntToStr((input/1023.0)*100, txt2);
        Lcd_Out(2,1,txt2); Lcd_Out(2,8,"%");
    }
}