“Contacts Manager” mini project in C with source code

Contacts Manager is a simple mini project code in C.This is similar to contact manager in Mobile phones.You can add contacts,remove contacts,edit contacts,search contacts and view all contacts.Graphics is not used just a console application suitable for learning purpose for beginner and can be used as a reference for college mini project.In this project you learning file handling ,how to write data,delete data and search data form file.I hope my post may help you and you can send email for further help.

Copy the source code below and compile it in Code::Blocks.

#include<stdio.h>

#include<conio.h>

#include<string.h>

#include<process.h>

#include<stdlib.h>

#include<dos.h>

struct contact

{

long ph;

char name[20],add[20],email[30];

}list;

char query[20],name[20];

FILE *fp, *ft;

int i,n,ch,l,found;

int main()

{

main:

system("cls");    /* ************Main menu ***********************  */

printf("\n\t **** Welcome to a0 contact Manager ****");

printf("\n\n\n\t\t\tMAIN MENU\n\t\t=====================\n\t\t[1] Add a new   

Contact\n\t\t[2] List all Contacts\n\t\t[3] Search for contact\n\t\t[4] Edit  

a Contact\n\t\t[5] Delete a Contact\n\t\t[0] Exit\n\t\t=================\n\t\t");

printf("Enter the choice:");

scanf("%d",&ch);

switch(ch)

{

case 0:

printf("\n\n\t\tAre you sure u want to exit?");

break;

/* *********************add new contacts************  */

case 1:

system("cls");

fp=fopen("contact.dll","a");

for (;;)

{ fflush(stdin);

printf("To exit enter blank space in the name input\nName (Use identical):");

scanf("%[^\n]",&list.name);

if(stricmp(list.name,"")==0 || stricmp(list.name," ")==0)

break;

fflush(stdin);

printf("Phone:");

scanf("%ld",&list.ph);

fflush(stdin);

printf("address:");

scanf("%[^\n]",&list.add);

fflush(stdin);

printf("email address:");

gets(list.email);

printf("\n");

fwrite(&list,sizeof(list),1,fp);

}

fclose(fp);

break;

/* *********************list of contacts*************************  */

case 2:

system("cls");

printf("\n\t\t================================\n\t\t\tLIST OF CONTACTS\n\t\t==== 

============================\n\nName\t\tPhone No\t    Address\t\tE-mail ad.\n=== 

==============================================================\n\n");

for(i=97;i<=122;i=i+1)

{

fp=fopen("contact.dll","r");

fflush(stdin);

found=0;

while(fread(&list,sizeof(list),1,fp)==1)

{

if(list.name[0]==i || list.name[0]==i-32)

{

printf("\nName\t: %s\nPhone\t: %ld\nAddress\t: %s\nEmail\t: %s\n",list.name, 

list.ph,list.add,list.email);

found++;

}

}

if(found!=0)

{printf("=========================================================== [%c]- 

(%d)\n\n",i-32,found);

getch();}

fclose(fp);

}

break;

/* *******************search contacts**********************  */

case 3:

system("cls");

do

{

found=0;

printf("\n\n\t..::CONTACT SEARCH\n\t===========================\n\t..::Name of  

contact to search: ");

fflush(stdin);

scanf("%[^\n]",&query);

l=strlen(query);

fp=fopen("contact.dll","r");

system("cls");

printf("\n\n..::Search result for '%s' \n====================================== 

=============\n",query);

while(fread(&list,sizeof(list),1,fp)==1)

{

for(i=0;i<=l;i++)

name[i]=list.name[i];

name[l]='\0';

if(stricmp(name,query)==0)

{

printf("\n..::Name\t: %s\n..::Phone\t: %ld\n..::Address\t: %s\n..::Email\t:  

%s\n",list.name,list.ph,list.add,list.email);

found++;

if (found%4==0)

{

printf("..::Press any key to continue...");

getch();

}

}

}

if(found==0)

printf("\n..::No match found!");

else

printf("\n..::%d match(s) found!",found);

fclose(fp);

printf("\n ..::Try again?\n\n\t[1] Yes\t\t[0] No\n\t");

scanf("%d",&ch);

}while(ch==1);

break;

/* *********************edit contacts************************/

case 4:

system("cls");

fp=fopen("contact.dll","r");

ft=fopen("temp.dat","w");

fflush(stdin);

printf("..::Edit contact\n===============================\n\n\t..::Enter the  

name of contact to edit:");

scanf("%[^\n]",name);

while(fread(&list,sizeof(list),1,fp)==1)

{

if(stricmp(name,list.name)!=0)

fwrite(&list,sizeof(list),1,ft);

}

fflush(stdin);

printf("\n\n..::Editing '%s'\n\n",name);

printf("..::Name(Use identical):");

scanf("%[^\n]",&list.name);

fflush(stdin);

printf("..::Phone:");

scanf("%ld",&list.ph);

fflush(stdin);

printf("..::address:");

scanf("%[^\n]",&list.add);

fflush(stdin);

printf("..::email address:");

gets(list.email);

printf("\n");

fwrite(&list,sizeof(list),1,ft);

fclose(fp);

fclose(ft);

remove("contact.dll");

rename("temp.dat","contact.dll");

break;

/* ********************delete contacts**********************/

case 5:

system("cls");

fflush(stdin);

printf("\n\n\t..::DELETE A CONTACT\n\t==========================\n\t..::Enter  

the name of contact to delete:");

scanf("%[^\n]",&name);

fp=fopen("contact.dll","r");

ft=fopen("temp.dat","w");

while(fread(&list,sizeof(list),1,fp)!=0)

if (stricmp(name,list.name)!=0)

fwrite(&list,sizeof(list),1,ft);

fclose(fp);

fclose(ft);

remove("contact.dll");

rename("temp.dat","contact.dll");

break;

default:

printf("Invalid choice");

break;

}

printf("\n\n\n..::Enter the Choice:\n\n\t[1] Main Menu\t\t[0] Exit\n");

scanf("%d",&ch);

switch (ch)

{

case 1:

goto main;

case 0:

break;

default:

printf("Invalid choice");

break;

}

return 0;

}