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

#define TEST_FILE "access.c"
 
int main(void)
{
    if( access(TEST_FILE, F_OK)!=0 )   
    {
        printf("File %s not exist!\n", TEST_FILE);
        return 0;
    }

    printf("File %s exist!\n", TEST_FILE);

    if(access(TEST_FILE, R_OK)==0) 
        printf("READ OK\n");

    if(access(TEST_FILE, W_OK)==0)  
        printf("WRITE OK\n");

    if(access(TEST_FILE, X_OK)==0) 
        printf("EXEC OK\n");

    return 0;
}