0x15. C File I O TASK 01 - humtej1204/holbertonschool-low_level_programming GitHub Wiki

1. Under the snow

mandatory

Create a function that creates a file.

  • Prototype: int create_file(const char *filename, char *text_content);
  • where filename is the name of the file to create and text_content is a NULL terminated string to write to the file
  • Returns: 1 on success, -1 on failure (file can not be created, file can not be written, write “fails”, etc…)
  • The created file must have those permissions: rw-------. If the file already exists, do not change the permissions.
  • if the file already exists, truncate it
  • if filename is NULL return -1
  • if text_content is NULL create an empty file
julien@ubuntu:~/0x15. File descriptors and permissions$ cat 1-main.c
#include <stdio.h>
#include <stdlib.h>
#include "main.h"

/**
 * main - check the code
 *
 * Return: Always 0.
 */
int main(int ac, char **av)
{
    int res;

    if (ac != 3)
    {
        dprintf(2, "Usage: %s filename text\n", av[0]);
        exit(1);
    }
    res = create_file(av[1], av[2]);
    printf("-> %i)\n", res);
    return (0);
}
julien@ubuntu:~/0x15. File descriptors and permissions$ gcc -Wall -pedantic -Werror -Wextra -std=gnu89 1-main.c 1-create_file.c -o b
julien@ubuntu:~/0x15. File descriptors and permissions$ ./b hello world
-> 1)
julien@ubuntu:~/0x15. File descriptors and permissions$ ls -l hello
-rw------- 1 julien julien 5 Dec  3 14:28 hello
julien@ubuntu:~/0x15. File descriptors and permissions$ cat hello 
worldjulien@ubuntu:~/0x15. File descriptors and permis$

Repo:

  • GitHub repository: holbertonschool-low_level_programming
  • Directory: 0x15-file_io
  • File: 1-create_file.c
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