Final Guestbook

gistfile1.txt

/* This program was written with time and love in 'ed'
   I hope you enjoy playing with it as much as I enjoyed
   writing it. */

#include <stdio.h>

#define BUFFER_SIZE 50

int main() {
    FILE * gbook;
    char bytes[BUFFER_SIZE];
    int read;
    long position = 0;
    int i;
    
    gbook = fopen(".guestbook", "r");

    while( (read = fread(bytes, 1, BUFFER_SIZE - 1, gbook)) > 0 ) {
        bytes[read] = 0;
        printf("%s", bytes);
    }

    fclose(gbook);
    gbook = fopen(".guestbook", "a");

    printf("Sign the guestbook! (Or Backspace to quit)\n");
    printf("Your Name: ");

    for(i = 0; i < BUFFER_SIZE; i++) {
        bytes[i] = 0;
    }

    while( (read = getchar()) != '\n') {
        bytes[position] = read;
        position = (position + 1) % BUFFER_SIZE;
    }

    fprintf(gbook, "%s >\n", bytes);
    printf("Your Message (Ctrl-D to end): \n");

    fprintf(gbook, "\t");
    while( (read = getchar()) != EOF) {
        fprintf(gbook, "%c", read);
        if(read == '\n') {
            fprintf(gbook, "\t");
        }
    }

    fprintf(gbook, "\n");
    printf("Thanks!\n");

    fclose(gbook);
}