Main

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
FILE *fb,*fp;
int position=0;
typedef struct birth //defining birthday date
{
    int day;
    int month;
    int year;
}birth;
birth readbirthday() //function for reading birthday from file (used in readcontact() function)
{
    birth birthday;
    fscanf(fb,",%d",&birthday.day);
    fscanf(fb,"/%d",&birthday.month);
    fscanf(fb,"/%d",&birthday.year);
    return birthday;
}

typedef struct contact //defining contacts and its fields
{
    char firstname[20];
    char lastname[20];
    birth birthday;
    char address[50];
    char city[20];
    int phonenumber;
}contact;
contact readcontact()
{
    contact contacts;
    FILE * fb = fopen("book.txt","r");
    fseek(fb,position,0);
    fscanf(fb,"%[^,]",contacts.firstname);
    fscanf(fb,",%[^,]",contacts.lastname);
    fscanf(fb,",%d",&contacts.birthday.day);
    fscanf(fb,"/%d",&contacts.birthday.month);
    fscanf(fb,"/%d",&contacts.birthday.year);
    fscanf(fb,",%[^,]",contacts.address);
    fscanf(fb,",%[^,]",contacts.city);
    fscanf(fb,",%d\n",&contacts.phonenumber);
    position = ftell(fb);
    fclose(fb);
    return contacts;
}
void printcontact(contact contacts)
{
    printf("First name is: %s\n",contacts.firstname);
    printf("Last name is: %s\n",contacts.lastname);
    printf("Birthday: %d/%d/%d\n",contacts.birthday.day,contacts.birthday.month,contacts.birthday.year);
    printf("Address: %s\n", contacts.address);
    printf("City: %s\n",contacts.city);
    printf("Phone number: 0%d\n",contacts.phonenumber);

}
void add_contact()
{
    contact Contact;
    fp = fopen("book.txt","a");
    printf("Enter the contact's first name\t:");
    scanf("%s",Contact.firstname);
    fprintf(fp,"%s,",Contact.firstname);
    printf("Enter the contact's last name\t:");
    scanf("%s",Contact.lastname);
    fprintf(fp,"%s,",Contact.lastname);
    printf("Enter the birth date\n");
    printf("enter the day:\t");
    scanf("%d",&Contact.birthday.day);
    fprintf(fp,"%d/",Contact.birthday.day);
    printf("enter the month\t:");
    scanf("%d",&Contact.birthday.month);
    fprintf(fp,"%d/",Contact.birthday.month);
    printf("enter the year\t:");
    scanf("%d",&Contact.birthday.year);
    fprintf(fp,"%d,",Contact.birthday.year);
    printf("Enter the address: ");
    scanf(" %199[^\n]",Contact.address);
    fprintf(fp,"%s,",Contact.address);
    printf("Enter the city: ");
    scanf("%s",Contact.city);
    fprintf(fp,"%s,",Contact.city);
    printf("Enter phone number\t:");
    scanf("%d",&Contact.phonenumber);
    fprintf(fp,"%d\n",Contact.phonenumber);

    fclose(fp);
}
int count_contacts()
{
    int count=0;
    fb = fopen("book.txt","r");
    while(!feof(fb))
    {
        char c;
        if((c=fgetc(fb))=='\n')
            count++;
    }
    fclose(fb);
    return count;
}
void display_menu()
{
    int x;
    printf("\t\t\t\t\t\t* * * * * * * * * * *\n\t\t\t\t\t\t* P h o n e b o o k *\n\t\t\t\t\t\t* * * * * * * * * * *\n\nWhat do you want?\n1-Add contact\n2-Delete\n3-Modify\n4-Search\n5-Print\n6-Save\n7-Quit\nPlease enter a number: ");
    scanf("%d",&x);
    switch(x)
    {
        case(1): add_contact();break;
        case(2): printf("add");
        case(3): printf("add");
        case(4): printf("add");
        case(5): ;break;
        case(7): printf("add");break;
        case(8): printf("add");break;
        case(9): printf("add");break;

    }
}
int main()
{
    system("COLOR FC");
    display_menu();
//    int i;
//    add_contact();
//    int count = count_contacts();
//    contact contacts[count];
//    for(i=0;i<count;i++)
//    contacts[i] = readcontact();
//    for(i=0;i<count;i++)
//    {
//        printf("\nContact number %d:\n",i+1);
//        printcontact(contacts[i]);
//
//    }
    return 0;
}