Question

2 days ago I’ve installed linux on my machine (1st time in my life :P) and now I’m tryin to write a char into a file. For some reason, it’s not working… Here’s my code.

#include <stdio.h>
#include <fcntl.h>
int main (int xd, char *tab[]) {
    char *path1 = tab[1];
    int filee = open(path1, O_WRONLY | O_CREAT| O_TRUNC, 0777);
    write(filee, 'x', sizeof(char));
    close(filee);
    return 0;
}

What could be wrong in this little piece of code? I’ve checked and function ‘write’ returns -1, even though function ‘open’ creates the file when it doesnt exist.
Thanks.

Answer 1

write takes a pointer to a memory buffer as the second argument, but you pass it an int

write(filee,'x',sizeof(char));

You should try something along the lines of

char c = 'x';
write(filee, &c, sizeof(char));