help for servo motor coding

im doin diz simple code,its for the ldr to detect the high and low input..i want to add a servo motor coding in it but im not sure how..im using pic16f684 & mplab ide v8.33 to compile.

i want the motor to keep moving when its low and when high the motor stop..

this is the simple code i did how to add servo motor code,if any1 can help me on this tq)

#include<pic.h>
__CONFIG(0x20d4);
#define LDR RA0
#define SWITCH RA1
#define light1 RC2
void init_io(void);
void execute(void);

void main(void)
{
init_io();

while(1)

if(LDR==0)
{
if(SWITCH==1)
{
light1 = 1;

}

else
{
light1= 0;

}
}
else
{
if (SWITCH2==1)
{
light1 = 1;

}

else
{
light1 = 0;

}
}

}
void init_io(void)

{
ANSEL = 0;
CMCON0 = 0;
TRISA = 0b000001;
PORTA = 0b000000;
TRISC = 0b011011;
PORTC = 0b000011;
}