Contact Management System Project Using C Language
Introduction
C Programming Mini-Project The Contact Management System is a simple console program with no visuals. It's similar to how mobile phones handle contacts. You may add, view, edit, search, and remove contacts in this project. All records that have been added or changed are kept in a file.
You may organize your contacts by name, phone number, address, and email address. All data was recorded through file handling. I utilized a data structure to save the user's name, email, and contact information. Overall, knowing the project's basic source code will show you how to use a file to add, modify, search, list, and delete data.
Source Code for Contact Management System Project Using C Language
#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 Contact Management System ****");
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 you 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;
}
Output
Explanation
In C, here's everything you need to know about the Contact Management System:
The primary components of this basic C mini project are file management, data structure, functions, and pointers. The following are the essential elements of a contact management system:
- Add new contacts, including their name, phone number, address, and email address.
- List all contacts: displays a list of all the contacts in the file, along with their contact information.
- Contacts may be found by searching by name and phone number.
- Edit contacts: Make changes to the information provided when adding contacts, such as name, phone number, address, and email address.
- Delete contacts: removes contacts from the database.
This project is identical to the Phonebook application mini-project that we previously shared. File management and data structures are used in both of these little projects. They're designed as a basic console application for novices to study and create small projects.
Final Words
This project may be used as a model for your college mini-project. Create a new project and try writing your own code. If you do, you are welcome to share with us.
This project will teach you how to utilize file management, data structure, and pointers effectively, specifically how to record, alter, search, browse, and delete data from a file. It is strongly discouraged to submit this short project on Contact Management System in C with little or no changes.
