#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>


int main(){
        int file,i;
        char filename[10];


	for(i = 1;i < 5;i++){
        sprintf(filename, "f%d.txt", i);
        file = open(filename, O_CREAT);
        printf("Opening.. f%d.txt: FILE #%d\n", i, i);
}

return 0;
}