Chương trình đọc ghi file chứa các số nguyên

/************************************************************/
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <string.h>

bool WriteFile();
bool SplitFile();

#define MAX_LEN 100

void main()
{
if (!WriteFile())
{
goto EXIT;
}
if (!SplitFile())
{
goto EXIT;
}
printf("\nSucessfull!!!");
EXIT:
getch();
}
/************************************************************
* Function: WriteFile()
* Description: Generate randomize number by using rand(), then
write to binary file SONGUYEN.INP
* Return: true if write successfully, false if write fail
*************************************************************/
bool WriteFile()
{
FILE *fp = NULL;
int idx;
int buff[MAX_LEN];
fp = fopen("D:\\SONGUYEN.INP", "wb");
if (!fp)
{
printf("\nError in opening file");
return false;
}
//Generate randomize number
for (idx = 0; idx < MAX_LEN; idx++)
{
buff[idx] = rand();
}
// Write data to SONGUYEN.INP file
if (fwrite(buff, sizeof(buff), 1, fp) < 1)
{
printf("\nError in writing SONGUYEN.INP file");
fclose(fp);
return false;
}
fclose(fp);
return true;
}
/************************************************************
* Function: SplitFile()
* Description: Read data from SONGUYEN.INP, then save odd number
to SOLE.OUT and save even number to SOCHAN.OUT
* Return: true if read and write successfully, false if read/write fail
*************************************************************/
bool SplitFile()
{
FILE *fp;
FILE *fpOdd, *fpEven;
int arr[MAX_LEN];
int idx;
fp = fopen("D:\\SONGUYEN.INP", "rb");
if (!fp)
{
printf("\nError in opening file");
return false;
}
if (fread(arr, MAX_LEN*sizeof(int), 1, fp) < 1)
{
printf("\nError in reading file");
fclose(fp);
return false;
}
fclose(fp);
fpOdd = fopen("D:\\SOLE.OUT", "w");
if (!fpOdd)
{
printf("\nError in opening file");
return false;
}
fpEven = fopen("D:\\SOCHAN.OUT", "w");
if (!fpEven)
{
printf("\nError in opening file");
return false;
}
for (idx = 0; idx < MAX_LEN; idx++)
{
if (arr[idx]%2 == 0)
{
fprintf(fpEven, "%d\t", arr[idx]);
}
else
{
fprintf(fpOdd, "%d\t", arr[idx]);
}
}
fclose(fpOdd);
fclose(fpEven);
return true;
}