#define _GNU_SOURCE

       #include <stdio.h>

       #include <stdlib.h>

       int main(void)

       {

            FILE * fp;

            char * line = NULL;

            size_t len = 0;

            ssize_t read;

            fp = fopen("/etc/motd", "r");

            if (fp == NULL)

                 exit(EXIT_FAILURE);

            while ((read = getline(&line, &len, fp)) != -1) {

                 printf("Retrieved line of length %zu :\n", read);

                 printf("%s", line);

            }

            if (line)

                 free(line);

            return EXIT_SUCCESS;

       }

CONFORMING TO

       Both getline() and getdelim() are GNU extensions.  They are available since libc 4.6.27.

SEE ALSO

       read(2), fgets(3), fopen(3), fread(3), gets(3), scanf(3)