FINAL PROJECT

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

FILE *pb;
int counter=0;
typedef struct
{
    char fname[20];
    char lname[20];
    char address[50];
    char city[20];
    char number[16];
} phonebook;
phonebook person[100];
void Load();
void add();
void delete_();
void modify();
void save();
void print();

void main()
{
    char x[20];
    int op,p;
    printf("|-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-|\n\n");
    printf("choose:\n");
    printf("1)Load contacts.\n2)show all contacts\n3)Add contact.\n4)Modify.\n5)delete contact.\n6)Search.\n7)save\n8)save & exit.\n9)exit without saving.\n\n");
    scanf(" %s",&x);
    op=atoi(x);
        while(op!=9)
        {
            system("cls");
            if(op<1||op>9)
                printf("enter a vaild number.\n\n");
            else
            {
                switch (op)
                {
                case 1:
                    Load();
                    break;
                case 2:
                    print();
                    break;
                case 3:
                    add();
                    break;
                case 4:
                    modify();
                    break;
                case 5:
                    delete_();
                    break;
                case 6:
                    printf("enter the last name of contatct you search for:\n");
                    search_(p);
                    break;
                case 7:
                    save1();
                    break;
                case 8:
                    save();
                    break;
                }
            }
            printf("\n-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-\n\n");
            printf("choose:\n");
            printf("1)Load contacts.\n2)show all contacts\n3)Add contact.\n4)Modify.\n5)delete contact.\n6)Search.\n7)save\n8)save & exit.\n9)exit without saving.\n\n");
            scanf(" %s",&x);
            op=atoi(x);
        }
}

void Load()
{
    int i=0;
    pb = fopen("phonebook.txt","r");
    if(pb==NULL)
        printf("no such file");
    else
    {
        while(!feof(pb))
        {
            fscanf(pb,"%[^,],%[^,],%[^,],%[^,],%s\n",person[counter].fname,person[counter].lname,person[counter].address,person[counter].city,person[counter].number);
            counter++;
        }
    }
    fclose(pb);
    printf("contacts have been loaded");
}
void add()
{
    int i;
    if(counter ==99)
    {
        system("cls");
        printf("the memory is full, you cant add another contact.\n\n");
    }
    else
    {
        printf("first name: ");
        getchar();
        scanf("%[^\n]s",person[counter].fname);
        printf("last name: ");
        scanf(" %[^\n]s",person[counter].lname);
        printf("address: ");
        scanf(" %[^\n]s",person[counter].address);
        printf("city: ");
        scanf(" %[^\n]s",person[counter].city);
        printf("Number: ");
        scanf(" %[^\n]s",person[counter].number);
        counter++;
        printf("\n\nA new contact has been added.");
    }
}
void delete_()
{
    int i,n,p,x;
    char z[10];
    printf("enter the last name of the contact you want to delete:\n");
    x=search_(p);
    if(x==0);
    else{
    printf("enter number of the contact you want to modify:\n");
    scanf("%s",z);
    n=atoi(z);
    if(n<1||n>counter)
    {
        system("cls");
        printf("not a valid choise");
    }
    else
    {
        n--;
        for(i=n; i<=counter; i++)
        {
            strcpy(person[i].fname,person[i+1].fname);
            strcpy(person[i].lname,person[i+1].lname);
            strcpy(person[i].address,person[i+1].address);
            strcpy(person[i].city,person[i+1].city);
            strcpy(person[i].number,person[i+1].number);
        }
        counter--;
        system("cls");
        printf("\nA contact has been deleted.");
    }
}
}
void modify()
{
    char names[20];
    int i,n,p,x;
    char m,z[10];
    printf("enter the last name of contatct you want to modify:\n");
    x=search_(p);
    if(x==0);
    else{
    printf("\nenter number of the contact you want to modify:\n");
    scanf(" %s",z);
    n=atoi(z);
    if(n<1||n>counter)
    {
        system("cls");
        printf("not a valid number");
    }
    else
    {
        n--;
        system("cls");
        printf("%d)\nfirst name: %s\nlast name: %s\naddress: %s\nCity: %s\nNumber: %s\n",n+1,person[n].fname,person[n].lname,person[n].address,person[n].city,person[n].number);
        printf("\n\nyou want to modify:\n");
        printf("1-first name\n2-last name\n3-number\n4-address\n5-city\n6-Done.\n\n");
        scanf(" %c",&m);
        while(m!='6')
        {
            if(m!='1'&&m!='2'&&m!='3'&&m!='4'&&m!='5')
            {
                printf("enter a valid number.\n\n");
            }
            else if(m=='1')
            {
                printf("Enter the new first name:\n");
                scanf("%s",person[n].fname);
            }
            else if(m=='2')
            {
                printf("Enter the new last name:\n");
                scanf("%s",person[n].lname);
            }
            else if(m=='3')
            {
                printf("Enter the new number:\n");
                scanf("%s",person[n].number);
            }
            else if(m=='4')
            {
                printf("Enter the new Address:\n");
                scanf(" %[^\n]s",person[n].address);
            }
            else if(m=='5')
            {
                printf("Enter the new City:\n");
                scanf("%s",person[n].city);
            }
            printf("\nenter the number of contact you want to modify: ");
            printf("\n1-first name\n2-last name\n3-number\n4-address\n5-city\n6-DONE\n\n");
            scanf(" %c",&m);
        }
        if(m=='6')
        {
            system("cls");
            printf("\n\nthe contact after modification:\n");
            printf("first name: %s\nlast name: %s\nAddress: %s\nCity: %s\nNumber: %s\n",person[n].fname,person[n].lname,person[n].address,person[n].city,person[n].number);
        }
        printf("\n\nA contact has been modified.");
    }
}
}
void search_(int p)
{
    int i;
    p=0;
    char name[20];
    scanf("%s",name);
    system("cls");
    printf("the results:\n");
    for(i=0; i<counter ; i++)
    {
        if(strcmpi(name,person[i].lname)==0)
        {
            printf("%d)\nfirst name: %s\nlast name: %s\nAddress: %s\nCity: %s\nNumber: %s\n\n\n",i+1,person[i].fname,person[i].lname,person[i].address,person[i].city,person[i].number);
            p++;
        }
    }
    if(p==0)
    {
        printf("the name doesn't exist.\n");
    }
    return p;
}
void save1()
{
    int i;
    pb=fopen("phonebook.txt","w");
    for(i=0; i<counter ; i++)
    {
        fprintf(pb,"%s,%s,%s,%s,%s",person[i].fname,person[i].lname,person[i].address,person[i].city,person[i].number);
        if(i!=counter-1)
            fprintf(pb,"\n");
    }
    fclose(pb);
    printf("\n\nyour changes saved.\n\n");
}
void save()
{
    int i;
    pb=fopen("phonebook.txt","w");
    for(i=0; i<counter ; i++)
    {
        fprintf(pb,"%s,%s,%s,%s,%s",person[i].fname,person[i].lname,person[i].address,person[i].city,person[i].number);
        if(i!=counter-1)
            fprintf(pb,"\n");
    }
    fclose(pb);
    printf("\n\nyour changes saved.\n\n");
    exit(0);
}

void print()
{
    int i,j,k,l;
    phonebook swap_;
    for (i=0 ; i < counter; i++)
    {
        for (j=0; j < counter-1; j++)
        {
            if (strcmpi(person[j].lname,person[j+1].lname)>0)
            {
                swap_=person[j];
                person[j]=person[j+1];
                person[j+1]=swap_;
            }
            else if(strcmpi(person[j].lname,person[j+1].lname)==0)
            {
                if (strcmpi(person[j].fname,person[j+1].fname)>0)
                {
                    swap_=person[j];
                    person[j]=person[j+1];
                    person[j+1]=swap_;
                }
                else if(strcmpi(person[j].fname,person[j+1].fname)==0)
                {
                    if(strcmp(person[j].number,person[j+1].number)>0)
                    {
                        swap_=person[j];
                        person[j]=person[j+1];
                        person[j+1]=swap_;
                    }
                }
            }
            else
                continue;
        }
    }
    system("cls");
    for (i=0 ; i <counter; i++)
        printf("%d)\nfirst name: %s\nlast name: %s\nAddress: %s\nCity: %s\nNumber: %s\n",i+1,person[i].fname,person[i].lname,person[i].address,person[i].city,person[i].number);
}