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Contact Management System
#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; //Start of main// int main() { system("cls"); / ************Main menu *********************** */ system("color 3f"); printf("\n\t **** Knowledge 360 ****"); 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 Your Choice: "); scanf("%d",&ch); switch(ch) { case 0: printf("\n\n\t\tAre You Sure To Exit?");
break; 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; 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\n=================================================================\n\n"); for(i=97; i<=122; i=i+1) { fp=fopen("contact.dll","r"); fflush(stdin);
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; 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; 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");
