Something

#ifndef LED_TRIS
#define LED_TRIS  TRISBbits.TRISB2
#endif

#ifndef LED_PIN
#define LED_PIN   PORTBbits.RB2
#endif

#ifndef LED_TRIS2
#define LED_TRIS2  TRISBbits.TRISB1
#endif

#ifndef LED_PIN2
#define LED_PIN2   PORTBbits.RB1
#endif

// ------------------------------------------------
// this #include pulls in the correct processor-specific registers
// definition file

#include "pic18fregs.h"

void main()
{
long i;
    // set pin to output
    LED_TRIS = 0;
    LED_TRIS2 = 0;
    // set pin to input
    PUSH_TRIS = 1;

    // sit in an endless loop blinking the led
    for(;;)
    {
        for (i=0; i < 40*330; i++);
        LED_PIN = 1;
        LED_PIN2 = 0;
        for (i=0; i < 40*330; i++);
        LED_PIN = 0;
        LED_PIN2 = 1;
    }
}