microC pro file handling, how to save image in sd card

/*********************SECURE DIGITAL CARD PROJECT************************/
/************************************************************************/
/*
  CS  is Connected to RC2
  CLK is Connected to RC3
  DO  is Connected to RC4
  DI  is Connected to RC5

The program reads the SD card CID register parameters and sends it to a PC via the serial interface.
This process is repeated at every 10 seconds.

*/
/*************************** MMC MODULE CONNECTION*************************/

sfr sbit Mmc_Chip_Select at RC2_bit;
sfr sbit Mmc_Chip_Select_Direction at TRISC2_bit;

/**************************************************************************/

/***********************Function For New Line******************************/
void NewLine()
{
 UART1_Write(10);                //Line Feed
 UART1_Write(13);                //Carriage Return
}
/**************************************************************************/

/**********************MAIN PROGRAM STARTS FROM HERE***********************/

unsigned char error, CID[16];         //CID means Card Identification Register
unsigned char msg[] = "SD Card CID Register";
unsigned int i;
unsigned short x;
unsigned char Data1[512],Data2[512];         //These Variables are used to Store and Receive Data in SD Card
void main()
{
 
 //Configure the Serial Port
 
 UART1_Init(9600);      //Set Baud Rate of 2400bps
 
 //Initialize the Secure Digital Card
 //Set SPI1 module to master mode, clock = Fosc/16, data sampled at the middle of interval,
 //clock idle state low and data transmitted at low to high edge:

 SPI1_Init_Advanced(_SPI_MASTER_OSC_DIV16,_SPI_DATA_SAMPLE_MIDDLE,_SPI_CLK_IDLE_LOW, _SPI_LOW_2_HIGH);
 
 //Initialize the Secure Digital Card Bus
 //And Check Whether it gets Initialized or Not
 //If Not then try again and Again
 // memory_card_not_detected:
 
 while(Mmc_Init() != 0)
 {
  NewLine();
  UART1_Write_Text("Memory Card Not Detected");
 }
 
  NewLine();
  UART1_Write_Text("Memory Card Detected Successfully!!");
  
  //If Memory Card Detected Successfully
 
  NewLine();
  UART1_Write_Text(msg);
  while(Mmc_Read_CID(CID) != 0)
  {
   NewLine();
   UART1_Write_Text("CID Value Not Found");
   NewLine();
  }
  NewLine();
  UART1_Write_Text("CID Values are Obtained");
  NewLine();
  //Now we will loads sector 10 of the SD card with character "A".
  //The contents of sector 10 is then read and sent to the UART,
  //displaying 512 "A" characters on the PC display.
  
  UART1_Write_Text("Now Time To Write Some Data in the SD Card");
  for(i=0;i<20;i++)
  {
   NewLine();
  }
  //The Above For Loop Clear the Hyper-Terminal Screen
  
  //Now Fill the Buffer with Character "A"
  for(i=0;i<512;i++)
  {
   Data1[i] = "A";
  }
  //After this the Data1 buffer gets Filled with "A" Character
  //Now write this buffer to SD Card Sector
  
  x = Mmc_Write_Sector(10,Data1);    //Writing Data to 10th Sector
  //We Can Check Here whether Writing was Successful or not by Monitoring the Value x
  if(x == 0)
  {
   UART1_Write_Text("Write Successfull");
   Newline();
  }
  
  //Now Read The Data From Sector-10 of SD Card
  x = Mmc_Read_Sector(10,Data2);     //Read data From Sector-10 of SD card and Store the Result in Data2
  if(x == 0)
  {
   UART1_Write_Text("Read Successfull");
   Newline();
  }
  //Display the Result on Hyper-Terminal
  
  for(i=0;i<10;i++)
  {
   UART1_Write(Data2[i]);
  }
  

 while(1);              //Stop Code Here for Debugging Purpose*/
}

while(total_number_of_package!=0)
{
unsigned char image_data[];
i=0;
while(i<256)
{
if(UART_Data_Ready()==1)
{
image_data[i]=UART_Read(); \\1 byte every loop
}
}
}

unsigned char x,image_data[256];
unsigned int i;
for(i=0;i<256;i++)
{
      if(UART1_Data_Ready() == 1)
      {
              image_data[i] = UART1_Read();
      }
}

 x = Mmc_Write_Sector(10,image_data);    //Writing Data to 10th Sector
  //We Can Check Here whether Writing was Successful or not by Monitoring the Value x
  if(x == 0)
  {
   UART1_Write_Text("Write Successfull");
   Newline();
  }