freopen - Associates existing stream with a different file in C

  1. Forget Code
  2. C
  3. freopen - Associates existing stream with a different file 

  #include <stdio.h>
  #include <stdlib.h>

  int main(void)
  {
    FILE *fp;

    printf("This will display on the screen.\n");

    if((fp=freopen("OUT", "w" ,stdout))==NULL) {
      printf("Cannot open file.\n");
      exit(1);
    }

    printf("This will be written to the file OUT.");

    fclose(fp);

    return 0;
  }