Zeiger Wettrennen

[Christian Kruse]

Hallo pl,

Dateien werden immer sequentiell geschrieben.

Nein.

#include <stdio.h>

int main(void) {
  FILE *fd = fopen("test.txt", "w");

  fseek(fd, 4 * sizeof(char), SEEK_SET);
  fwrite("bar\n", sizeof(char), 4, fd);

  fflush(fd);

  fseek(fd, 0, SEEK_SET);
  fwrite("foo", sizeof(char), 3, fd);
  fclose(fd);


  return 0;
}

➜ ckruse@Pug ~  % gcc -Wall -ansi -pedantic -o test test.c
➜ ckruse@Pug ~  % ./test
➜ ckruse@Pug ~  % cat test.txt
foobar
➜ ckruse@Pug ~  % 

LG,
CK