[C/C++] 檢查檔案或資料夾是否存在

說明:
檢查檔案或資料夾是否存在

Code:

#include <stdio.h>
#include <unistd.h>

#define BOOL                    int
#define TRUE                    0
#define FALSE                   -1
#define MAX_LONG_LENGTH         1024
#define MAX_SHORT_LENGTH        128

BOOL is_file_exist_fun(char *filename)
{
    int bRet = FALSE;
    FILE* fp = fopen(filename, "r");
    if (fp) 
    {
        bRet = TRUE;
        fclose(fp);
    }
    return bRet;
}

BOOL is_folder_exist_fun(char *foldername)
{
    BOOL bRet = FALSE;
    int ret = chdir(foldername);
    if (ret == 0)
        bRet = TRUE;
    return bRet;
}

int main(int argc, char *argv[])
{
    BOOL ret = is_file_exist_fun("/etc/exports");
    printf("/etc/exports : %s\n", ret==TRUE?"Exist":"Not Exist");
    
    ret = is_folder_exist_fun("/etc/");
    printf("/etc/ : %s\n", ret==TRUE?"Exist":"Not Exist");    
    return 0;
}

Result:

/etc/exports : Exist

/etc/ : Exist