gistfile1.c

char *getline(void)
{
   char* accumulator = malloc(100);
   char readBuf[100];
   int accumulatorSize = 100;
   *accumulator = '\0';

   while (!feof(stdin))
   {
     fgets(readBuf, 99, stdin);
     strcat(accumulator, readBuf);
     /* possible fencepost error here */
     if (readBuf[strlen(readBuf)] != '\n')
     {
       accumulatorSize += 100;
       accumulator = realloc(accumulator, accumulatorSize);
       /* should probably check for realloc returning null */
     }
     else
       break;
   }
   return accumulator;
}