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C .联系人管理系统

这个C联系人管理系统项目是用C语言编写的，是一个控制台应用程序。这个系统是在Code::Blocks IDE中使用GCC编译器构建的一个简单的副项目。联系人管理系统控制台软件是一个简单的工具，没有图形。

类似于移动设备上的联系人管理。您可以在此项目中添加、查看、编辑、搜索和删除联系人。为添加或修改的每个记录维护一个文件。对于初学者来说，学习如何用C语言创建web项目的一个简单项目是Contact Management System in C。C项目的整个源代码将提供给你，所以你可以快速地将其安装到你的计算机上，并开始学习如何用C语言编程。

联系人管理系统的基础思想是创建个人或组织的联系人记录，添加这些数据并更新它。在这里，用户可以安全快速地添加他们的联系信息。这个系统使每个人的记录都很容易保存。整个项目是使用“C”编程语言和各种变量和字符串开发的。消费者会发现这个小项目易于使用和理解。它是用C语言创建的一个简单的终端程序，没有使用任何可视化元素。

系统简介

通过输入姓名、电话、地址和电子邮件等详细信息添加新联系人。
显示所有联系人:显示存储在文件中的每个联系人的信息列表。
可以使用姓名和电话号码搜索联系人。
编辑联系人:在添加联系人时，可以修改联系人的姓名、电话号码、地址和电子邮箱。
通过从文件中删除联系人来删除联系人。
通过输入姓名、电话、地址和电子邮件等详细信息添加新联系人。
命名每个联系人:包括文件中的每个联系人及其个人联系信息。
可以使用姓名和电话号码搜索联系人。
编辑联系人:在添加联系人时，可以修改联系人的姓名、电话号码、地址和电子邮箱。
通过从文件中删除联系人来删除联系人。

程序崩溃

为我们的联系人列表创建了一个结构。

            系统(“CLS”);/ * * * * * * * *主菜单* * * * * * * * * * * / printf(“\ n \ t * * * *欢迎光临联系管理系统* * * *”);printf (" \ n \ n \ n \ t \ \ t主菜单\ n \ \ t  = = = = = = = = = =\ n \ t \ t[1]添加一个新的联系人\ n \ t \[2]所有联系人列表\ n \ t \[3]搜索联系\ n \ t \[4]编辑联系人\ n \ t \[5]删除一个联系人\ n \ t \ t[0]退出\ n \ \ t  = = = = = = = = = = = = \ n \ t \ t”);printf("输入选择");Scanf (" % d "， &ch);
           

驱动程序代码类似于上面的代码，它将在C语言中显示联系人管理系统的主菜单，具有添加新联系人、列出所有联系人、搜索联系人、编辑联系人、删除联系人和退出的选项。

            案例1:系统(“CLS”);Fp = fopen (" contact . "DLL "， " a ");对于(;,){fflush (stdin);printf("要退出，请在名称输入\ n name中输入空格(使用相同的名称):");扫描f(“% [^ \ n]”，& list。名称);If (stricmp (list。 name , " " ) = = 0 | | stricmp ( list . name , " " ) = = 0 ) break ; fflush ( stdin ) ; printf ( " Phone : " ) ; scanf ( " % l d " , & list . ph ) ; fflush ( stdi ) ; 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 ;
           

如果用户选择了选项1，即添加一个联系人，那么上面的代码将起作用。

            案例2:系统(“CLS”);printf(“\ n \ t = = = = = = = = = = = = = = = \ n \ t LIST OF CONTACTS \ n \ t = = = = = = = = = = = = = = = \ n Name \ t Phone No \ t Address \ t E-mail ad.”\ n = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = \ n \ n”);对于(I = 97;I < = 122;I = I + 1) {fp = fopen("接触。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 ( " \ n Name \ t : % s \ n Phone \ t : % l d \ n Address \ t : % s \ n Email \ 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 ;
           

上面的代码用于显示用户输入的联系人列表。

            案例3:系统(“CLS”);Do {found = 0;Printf (" \ n \ n \ t . . "::接触搜索\ n \ t  = = = = = = = = = = = = = = = = \ n \ t。。::搜索联系人姓名:");Fflush (stdin);Scanf (" % [^ \ n] "， &查询);L = strlen(查询);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 : % l d \ 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 ;
           

如果用户想要搜索一个联系人，那么上面的代码就会起作用。

            案例4:系统(“CLS”);Fp = fopen (" contact . "DLL "， " r ");Ft = fopen (" temp . "Dat "， " w ");Fflush (stdin);Printf(”。:: \ n编辑联系  = = = = = = = = = = = = = = = = = = = = = \ n \ n \ t。。::输入联系人姓名进行编辑:");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 ( " % l d " , & 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 ;
           

如果用户想编辑一个现有的联系人，那么上面的代码就会起作用。

            案例5:系统(“CLS”);Fflush (stdin);Printf (" \ n \ n \ t . . "::删除一个联系人\ n \ t  = = = = = = = = = = = = = = = = \ n \ t。。::输入联系人姓名删除:");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 ; }
           

如果用户想从列表中删除一个联系人，那么上面的代码就会起作用。

C语言的联系人管理系统编程

            #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];}列表;Char查询[20]，名称[20];文件*fp， *ft;Int i, n, ch, l, found;Int main() {main:系统("cls");/* ************ 主菜单  *********************** */ printf (" \ n \ t * * * *欢迎联系管理系统* * * *”);printf (" \ n \ n \ n \ t \ t \ tMAIN菜单\ n \ \ t =====================\ n \ t \ t[1]添加一个新的联系人\ n \ t \[2]所有联系人列表\ n \ t \[3]搜索联系\ n \ t \[4]编辑联系人\ n \ t \[5]删除一个联系人\ n \ t \ t[0]退出\ n \ \ t =================\ n \ t \ t”);printf("输入选择"); 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; }
           

输出:

****欢迎联系人管理系统**** MAIN MENU =====================[1]添加新联系人[2]列出所有联系人[3]搜索联系人[4]编辑联系人[5]删除联系人[0]退出=================输入选择:退出在名称中输入空格输入名称(使用相同):Vikas电话:123456789地址:块邮箱地址:(电子邮件保护)退出时，在名称中输入空格，输入name (Use same):Vivan Phone:546738546 address:C Block email address:(电子邮件保护)要退出，在名称中输入空格，输入名称(使用相同的):..::进入选择:[1]主菜单[0]退出1  = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 的联系人列表  = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 名字电话没有地址的电子邮件广告。= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 名称:维电话:123456789地址:一块电子邮件:(电子邮件保护)姓名:Vivan电话:546738546地址:C Block邮箱:(电子邮件保护)= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = [ V) -(2)。::“维的搜索结果 ' = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = . .姓名:维卡斯。。电话:123456789。::地址:A块。::电子邮件:(电子邮件保护)。。:发现1个匹配!。。再试一次?[1]是[0]否。::搜索结果“维维安 ' = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = . .姓名:Vivan。。电话:546738546。::地址:C块。::电子邮件:(电子邮件保护)。。:发现1个匹配!。。再试一次?[1]是[0]否。::删除一个联系人  = = = = = = = = = = = = = = = = = = . .::输入要删除的联系人名称:Vikas

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