#include<stdio.h>
#include<string.h>
#include<stdlib.h>
//以上为头文件；

//以下为创建联系人结构体(数组)；
struct Person
{
       char name[20];
       char num[20];
       char address[30];
       char remark[100];
}Person[100];
//以上为创建联系人结构体(数组)；

void menu();//菜单函数声明；  
void create();//新建联系人函数声明；
void modify();//修改联系人函数声明；
void deleter();//删除联系人函数声明；
void traverse();//遍历联系人函数声明；
void sort(struct Person *);//排序函数声明；（注：排序功能镶嵌到遍历联系人中；）
void search();//查找联系人函数声明；

int record=0;//用于记录联系人的记数,该为程序的核心；




 
//以下为主函数体；
int main()
{
    menu();

    return 0;
}
//以上为主函数体；





//以下为菜单功能函数部分；
void menu()
{
     int n;
  printf("\n");
  printf("\n");
  printf("\t\t       ^.^         欢迎使用通讯录系统       ^.^      \n\n\n");
  printf("\n");
  
  printf("\t\t*********************** 操作菜单 *******************\n\n");
  printf("\t\t*                  1.  添加联系人                  *\n\n");
  printf("\t\t*                  2.  修改联系人                  *\n\n");
  printf("\t\t*                  3.  删除联系人                  *\n\n");
  printf("\t\t*                  4.  全部联系人                  *\n\n");
  printf("\t\t*                  5.  查找联系人                  *\n\n");
  printf("\t\t*                  6.  退      出                  *\n\n");
  printf("\t\t*********制作人************************黄梓健*******\n\n");

  printf("请选择操作种类(1-6) \n (按Enter进行确认) : ");
  scanf("%d",&n);
  
  switch(n)//分支实现操作功能；
  {
      case 1: create(); break;
      case 2: modify(); break;
      case 3: deleter(); break;
      case 4: traverse(); break;
      case 5: search(); break;
      case 6: {system("cls");printf("\n\n\n\n\t\t\t");
              printf("······感谢您的使用 再见·······\n\n\n\n\n\n\n\n\n\n\n\n\t\t\t\t\t\t");
              exit(0);}  
      default:                    //输入无义后的处理办法；
    {   
        printf("\n\n\n\t\t输入有误!请重新输入(自动跳转恢复中···)\n\n\n\n\n\t\t\t");
        printf("\t\t\t");
        getchar();
        system("cls");
        menu();
    }
  }
}
//以上为菜单功能函数部分；


//以下为新建联系人函数部分；
void create()
{
    FILE *fp;
    int want;//想要保存的联系人个数；
    int i;
    char j;

    system("cls");//清屏；

    printf("\t^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ \n\n");
    printf("\t^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ \n\n");
    printf("\t^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ \n\n");
    printf("\n\n\n\t\t********       确定添加联系人？（y/n）  ********\n\n\n");
    printf("\t(若确定请输入指令'y',否则按其他键返回主菜单:)");

    getchar();   
    j=getchar();//j接收键盘的输入；

    if(j!='y')
        {system("cls");
        menu();}

    else
  {
            system("cls");
               
            fp=fopen("contactBook","wb+"); //“打开”通讯录文件；

            printf("\n\n\n\t已建有通讯录文件'contactBook'  联系人均存储在该通讯录文件中···\n");  

//KEY
                    for(i=1;i<=100;i++)
                            {fread(&Person[i],sizeof(struct Person),1,fp);}//从文件中读取全部联系人信息；

                    for(i=1;i<=100;i++)
                            {
                            if (Person[i].name==NULL)//若发现有空结构体，下一步···
                            {record=i-1;break;} //令record等于i，由于i由1开始记数，所以此时记录record=i-1
                            //跳出本次循环;
                            }
//KEY
            
            
            
            printf("\n\t\n\n\n\t\t\t");
            system("pause");
            system("cls");
               

            printf("\n\n\n\n\n\n\n\n\n\n\t\t\t想保存的联系人个数(1-100):");
            scanf("%d",&want);
            printf("\n");
            
            
            if(want<1||want>100)
            {
             printf("请输入正确的欲保存联系人个数！\n");
             printf("********************************\n");
             printf("******重新载入中***请稍等*******\n");
             system("pause");
             menu();//不正常输入want则返回主菜单;
            }
            

             //正常输入want后执行下面部分;
             else

             {          system("cls");
                        printf("\t\t\t");
                        printf("\n\t\t\t********正在新建%d位联系人********\n",want);
                        printf("\n");
               
                        for(i=1;i<=want;i++)//循环存储联系人信息;                    
                    {                       
                        printf("\t\t\t*正在新建第%d个联系人 还有%d个待建*\n",i,want-i);

                        record++;//编号自增; (初始默认是0，但若已存在通讯录文件则有改变。注：结构体由Person[1]开始存储联系人信息)
                    
                        printf("\t请输入联系人姓名:\n");printf("\t\t");
                        scanf("%s",&Person[record].name);
                        
                        printf("\t请输入联系人号码：\n");printf("\t\t");
                        scanf("%s",&Person[record].num);
                        
                        printf("\t请输入联系人地址：\n");printf("\t\t");
                        scanf("%s",&Person[record].address);
                        
                        printf("\t请输入该联系人备注:\n");printf("\t\t");
                        scanf("%s",&Person[record].remark);
                        
                        fwrite(&Person[record],sizeof(struct Person),1,fp);//把当前结构体写入二进制文件中；
                         printf("***************************************");
                        printf("***************************************\n\n");

                     }
              }   

                        printf("\t\t\t\t正在创建中 请稍后···");
                        printf("\n\n\n\n\t\t\t\t");
                        system("pause");

                //以下为重现录入情况；
                system("cls");
                printf("以下为刚录入的联系人：\n");
               
               for(i=record-want+1;i<=record;i++)
               {
                printf("****************************************\n");
                printf("*                                     **\n");           
                printf("**     联系人姓名：");printf("%s",Person[i].name);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人号码：");printf("%s",Person[i].num);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人地址：");printf("%s",Person[i].address);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人备注：");printf("%s",Person[i].remark);
                printf("\n");
                printf("*                                     **\n");
                printf("****************************************\n");
                printf("\n");
               }
                printf("\n        ^.^     保存成功       ^.^       \n");
                printf("**************刚录入%d条记录*************\n",want);
                printf("**************共有%d条记录***************",record);
                //以上为重现录入情况；
                    
            printf("\n");
            printf("\n");
            printf("\n");
            printf("\n");
            printf("*^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^*\n");
            printf("*   ^.^      按任意键返回菜单     ^.^   *\n");
            printf("*^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^ ^.^*\n");
            printf("\n");            
            
            fclose(fp);//关闭文件指针；   
            system("pause");
            system("cls");
            menu();                                          
       }
   
}
//以上为新建联系人函数部分；


 
//以下为修改联系人函数部分；
void modify()
{
    int i;
    FILE *fp;
    char gname[20];//名字改正；
    char gnum[20];//号码改正；
    char gaddress[30];//号码改正；
    char gremark[100];//备注改正;

    system("cls");//清屏；

    printf("\n\n\n\t请输入你想进行修改的联系人姓名(输入'exit'为返回主菜单):");
    scanf("%s",gname);

    if( strcmp(gname,"exit")==0 )
    {system("cls");
        menu();}
    else
{
   
   
    if ((fp=fopen("contactBook","rb+"))==NULL)
    { printf("\n\n\t||=.=   没有联系人记录···按任意键返回菜单··· =.=||  \n\n\t\t\t");
    system("pause");
    system("cls");
    menu(); }
            
    else
 {  
//KEY
                    for(i=1;i<=100;i++)
                            {fread(&Person[i],sizeof(struct Person),1,fp);}//从文件中读取全部联系人信息；

                    for(i=1;i<=100;i++)
                            {
                            if (Person[i].name==NULL)//若发现有空结构体，下一步···
                            {record=i-1;break;} //令record等于i，由于i由1开始记数，所以此时记录record=i-1
                            //跳出本次循环;
                            }
//KEY

    for(i=1;i<=record;i++)
      {
        if((strcmp(Person[i].name,gname))==0)
        {
                printf("\t\t\t     ^.^     找到相关联系人如下：  ^.^  \n");
                printf("****************************************\n");
                printf("****************************************\n");
                printf("*                                     **\n");           
                printf("**     联系人姓名：");printf("%s",Person[i].name);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人号码：");printf("%s",Person[i].num);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人地址：");printf("%s",Person[i].address);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人备注：");printf("%s",Person[i].remark);
                printf("\n");
                printf("*                                     **\n");
                printf("****************************************\n");
                printf("****************************************\n");
                printf("\n");
 
                printf("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n");
                printf("$$$修改联系人姓名---请在下面输入新的联系人姓名（不需修改请输入ok）\n");
                printf("原联系人姓名：%s\n",Person[i].name);
                printf("新联系人姓名：");
                scanf("%s",gname);
                if( strcmp(gname,"ok")!=0)
                {strcpy(Person[i].name,gname);}
                else
                {printf("\n保持原联系人姓名^.^ \n\n");}
               
                printf("$$$修改联系人号码---请在下面输入新的联系人号码（不需修改请输入ok）\n");
                printf("原联系人号码：%s\n",Person[i].num);
                printf("新联系人号码：");
                scanf("%s",gnum);
                if( strcmp(gnum,"ok")!=0)
                {strcpy(Person[i].num,gnum);}
                else
                {printf("\n保持原联系人号码^.^ \n\n");}
               
                printf("$$$修改联系人地址---请在下面输入新的联系人地址（不需修改请输入ok）\n");
                printf("原联系人地址：%s\n",Person[i].address);
                printf("新联系人地址：");
                scanf("%s",gaddress);
                if( strcmp(gaddress,"ok")!=0)
                {strcpy(Person[i].address,gaddress);}
                else
                {printf("\n保持原联系人地址^.^ \n\n");}
               
                printf("$$$修改联系人备注---请在下面输入新的联系人备注（不需修改请输入ok）\n");
                printf("原联系人备注：%s\n",Person[i].remark);
                printf("新联系人备注：");
                scanf("%s",gremark);
                if( strcmp(gremark,"ok")!=0)
                {strcpy(Person[i].remark,gremark);}
                else
                {printf("\n保持原联系人备注^.^ \n\n");}
                printf("\n");
                printf("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n");
               
                printf("$$$$$$$$$$ 以下为修改后的联系人 $$$$$$$$$$\n");
                printf("****************************************\n");
                printf("****************************************\n");
                printf("*                                     **\n");           
                printf("**     联系人姓名：");printf("%s",Person[i].name);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人号码：");printf("%s",Person[i].num);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人地址：");printf("%s",Person[i].address);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人备注：");printf("%s",Person[i].remark);
                printf("\n");
                printf("*                                     **\n");
                printf("****************************************\n");
                printf("****************************************\n");
                printf("\n");
        
        break;
        }
        
        
        else if(i==record)
        {
             printf("\n   =.=      没有相关联系人信息      =.=    \n");
             printf("······按任意键返回主菜单······\n\n");
             system("pause");
             system("cls");//清屏
             menu();
        }
       }
    fclose(fp);
   
    fp=fopen("contactBook","wb+");
    for(i=1;i<=record;i++)
      {
        fwrite(&Person[i],sizeof(struct Person),1,fp);//重写通讯录文件;
      }
    fclose(fp);
   
    printf("      *^.^*    联系人已修改成功！    *^.^*     ");
    printf("\n······ 按任意键返回主菜单 ······\n");
    system("pause");
    system("cls");
    menu();
 }

}
}
//以上修改联系人函数部分；



//以下为删除联系人函数部分；
void deleter()
{
    FILE *fp;
    int i,j;
    char q;
    char s[20];//s代表删除^.^

    system("cls");//清屏；

    printf("\n\n\n\t请输入你想删除的联系人姓名(输入'exit'为返回主菜单):");
    scanf("%s",s);
   
    if( strcmp(s,"exit")==0 )
    {system("cls");
        menu();}
    else
{

   
     if((fp=fopen("contactBook","rb+"))==NULL)
     {
     printf("\n\n\t\t  ||=.=    没有联系人信息···   =.=||  \n\n\n");
     printf("\t\t  ······按任意键返回菜单······\n\n\n\n");
     printf("\t\t\t\t\t\t\t");
     system("pause");
     system("cls");//清屏；
     menu(); //回到菜单状态；
     }
     
     else
     {
//KEY
                    for(i=1;i<=100;i++)
                            {fread(&Person[i],sizeof(struct Person),1,fp);}//从文件中读取全部联系人信息；

                    for(i=1;i<=100;i++)
                            {
                            if (Person[i].name==NULL)//若发现有空结构体，下一步···
                            {record=i-1;break;} //令record等于i，由于i由1开始记数，所以此时记录record=i-1
                             //跳出本次循环;
                            }
                    
//KEY

        
         
         for(i=1;i<=record;i++)
         {
            if(strcmp(Person[i].name,s)==0)//一旦匹配，就立即输出！
            {
                printf("\t找到相关联系人如下  *^.^*\n");
                printf("****************************************\n");
                printf("****************************************\n");
                printf("*                                     **\n");           
                printf("**     联系人姓名：");printf("%s",Person[i].name);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人号码：");printf("%s",Person[i].num);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人地址：");printf("%s",Person[i].address);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人备注：");printf("%s",Person[i].remark);
                printf("\n");
                printf("*                                     **\n");
                printf("****************************************\n");
                printf("****************************************\n");
                printf("\n");
                //break;//找到后 立即跳出for循环；


                printf("\n确认删除？？？(确认请按'y',否则按任意键返回主菜单···)\n");
                getchar();
                q=getchar();

                  if( q!='y' )
                {system("cls");
                      menu();}
               
                  else
                {
                    for(j=i+1;j<=record;j++)
                {strcpy(Person[j-1].name,Person[j].name);
                strcpy(Person[j-1].num,Person[j].num);
                strcpy(Person[j-1].address,Person[j].address);
                strcpy(Person[j-1].remark,Person[j].remark);}//删除原理：利用后者完全覆盖前者;
               
                record--;//每删除一个联系人，变量record记录减少一次;     
                fclose(fp);
               
                fp=fopen("contactBook","wb+");
                for(i=1;i<=record;i++)
                  {
                    fwrite(&Person[i],sizeof(struct Person),1,fp);//重写通讯录文件;
                  }
                fclose(fp);
               
                printf("\n\n\t\t      *^.^*    联系人已成功删除！    *^.^*     \n");
                printf("\n\t\t······ 按任意键返回主菜单 ······\n\n\n\n\t\t");
                system("pause");
                system("cls");
                menu();
                }
            }
            
               
              else if(i==record)//找不到就执行下面；
              {  
                 printf("\n\n\t\t  ||=.=    没有找到该联系人信息···   =.=||  \n\n\n");
                 printf("\t\t  ······按任意键返回菜单······\n\n\n\n");
                 printf("\t\t\t\t\t\t\t");
                 system("pause");
                 system("cls");//清屏；
                 menu(); //回到菜单状态；
              }
           }
     }  
     printf("\n\t\t···按任意键返回主菜单···");
     system("pause");
     system("cls");
     menu();
}
}
//以上为删除联系人函数部分；  



//以下为遍历联系人函数部分；
void traverse()
{
     char g;
     int i;//for专用；
     FILE *fp;

     system("cls");//清屏，进入显示所有联系人的界面；     
   
     fp=fopen("contactBook","rb+");
     
     if((fp=fopen("contactBook","rb+"))==NULL)
     {
     printf("\n\n\n\n\n\t\t=.= 没有联系人记录 或者保存的文件丢失 =.=   \n\n");
     printf("\t········按任意键回到菜单·········\n\n\n");
     printf("\t\t\t");
     system("pause");
     system("cls");//清屏；
     menu(); //回到菜单状态；
     }
     
     else
     {
//KEY
                    for(i=1;i<=100;i++)
                            {fread(&Person[i],sizeof(struct Person),1,fp);}//从文件中读取全部联系人信息；

                    for(i=1;i<=100;i++)
                            {
                            if (Person[i].name==NULL)//若发现有空结构体，下一步···
                            {record=i-1;break;} //令record等于i，由于i由1开始记数，所以此时记录record=i-1
                             //跳出本次循环;
                            }
//KEY
             printf("以下为全部联系人信息：\n");
                 for(i=1;i<=record;i++)
               {
                     printf( "( %d )",i);
                printf("***********************************\n");
                printf("****************************************\n");
                printf("*                                     **\n");           
                printf("**     联系人姓名：");printf("%s",Person[i].name);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人号码：");printf("%s",Person[i].num);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人地址：");printf("%s",Person[i].address);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人备注：");printf("%s",Person[i].remark);
                printf("\n");
                printf("*                                     **\n");
                printf("****************************************\n");
                printf("****************************************\n");
                printf("\n");
               }
                 printf("\n");printf("\t共%d条记录\n",record);

                 printf("\t\t\t\t\t*^.^*");               
               
         
         printf("\n");
         printf("***************************************");
         printf("*****************************************\n");
         
         
         printf("\t^.^       需要进行排序查看吗？（y/n）\n\t\t（输入‘y’进行排序,输入其他键返回主菜单:）");
         
         getchar();
         g=getchar();
         
         if(g!='y')
         {
             fclose(fp);
             system("cls");
             menu();
         }
         
         else
             { system("cls");//清屏，以便显示排序后的全部联系人；

               sort(Person);//调用排序函数；

               printf("\n");
               printf("\n");
              
               fclose(fp);

               printf("              按任意键返回主菜单···");
               system("pause");//间歇···
               system("cls");
               menu();
             }
       }
}
     
//以上为遍历联系人函数部分；



//以下为排序函数部分；
void sort(struct Person *a)
{
     int i,j;//for循环，冒泡法排序···
     char m;
     char n;
     struct Person temp;
   
     for(j=1;j<=record;j++)
         for(i=1;i<=record-j;i++)//冒泡中···
     {
     m=Person[i].name[0] ;//只接收首字母；
     n=Person[i+1].name[0];//只接收首字母；
         if (m>n)
         {temp=Person[i];
         Person[i]=Person[i+1];
         Person[i+1]=temp;}//很明显，交换中···
     }

     printf("以下为排序后的全部联系人信息：\n");
               for(i=1;i<=record;i++)
               {printf("( %d )\n",i);
                printf("****************************************\n");
                printf("****************************************\n");
                printf("*                                     **\n");           
                printf("**     联系人姓名：");printf("%s",Person[i].name);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人号码：");printf("%s",Person[i].num);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人地址：");printf("%s",Person[i].address);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人备注：");printf("%s",Person[i].remark);
                printf("\n");
                printf("*                                     **\n");
                printf("****************************************\n");
                printf("****************************************\n");
                printf("\n");
               }
     printf("\n");
     printf("\t*******************排序完成*********************");
     
     return;
}
//以上为排序函数部分；



//以下为查找联系人函数部分；
void search()
{
     char findname[20];
     int i;//for专用···
     FILE *fp;

     int k;

     system("cls");//清屏；
     
     printf("\n\n\t^.^请输入你想查找的联系人姓名(输入'exit'为返回主菜单) ^.^  \n");
     printf("        我要查找：");
     scanf("%s",findname);

     if( strcmp(findname,"exit")==0 )
     {   system("cls");
         menu();}
     else
{

     printf("\n");
     

     if((fp=fopen("contactBook","rb+"))==NULL)
     {
     printf("\n\n\t\t  ||=.=    没有联系人信息···   =.=||  \n\n\n");
     printf("\t\t  ······按任意键返回菜单······\n\n\n\n");
     printf("\t\t\t\t\t\t\t");
     system("pause");
     system("cls");//清屏；
     menu(); //回到菜单状态；
     }
     
     else
     {
//KEY
                    for(i=1;i<=100;i++)
                            {fread(&Person[i],sizeof(struct Person),1,fp);}//从文件中读取全部联系人信息；

                    for(i=1;i<=100;i++)
                    {
                            if (Person[i].name==NULL)//若发现有空结构体，下一步···
                            {record=i-1;break;} //令record等于i，由于i由1开始记数，所以此时记录record=i-1
                             //跳出本次循环;
                    }
                    
//KEY

        
         
         for(i=1;i<=record;i++)
         {
            if(strcmp(Person[i].name,findname)==0)//一旦匹配，就立即输出！
            {
                printf("\t找到了!!!  *^.^*\n");
                printf("****************************************\n");
                printf("****************************************\n");
                printf("*                                     **\n");           
                printf("**     联系人姓名：");printf("%s",Person[i].name);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人号码：");printf("%s",Person[i].num);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人地址：");printf("%s",Person[i].address);
                printf("\n");
                printf("*                                     **\n");
                printf("**     联系人备注：");printf("%s",Person[i].remark);
                printf("\n");
                printf("*                                     **\n");
                printf("****************************************\n");
                printf("****************************************\n");
                printf("\n");
                break;//找到后 立即跳出for循环；   
            }

        
            
               
              else if(i==record)//找不到就执行下面；
              {  
                 printf("\n\n\t\t  ||=.=    没有找到该联系人信息···   =.=||  \n\n\n");
                 printf("\t\t  ······按任意键返回菜单······\n\n\n\n");
                 printf("\t\t\t\t\t\t\t");
                 system("pause");
                 system("cls");//清屏；
                 menu(); //回到菜单状态；
              }
           }
     }  
     printf("\n\t\t···按任意键返回主菜单···");
     system("pause");
     system("cls");
     menu();  
}
}
//以上为查找联系人函数部分；

你真的运行不出错误吗？？？其实这是我的大作业，相信老师也只会运行一次···但是，这个程序也只能运行一次才看不出端倪···运行第二次，你就会发现···哈哈哈···

我用的是DevCPP编译 所以格式方面···不如VC6.0好···现在我已经换了VC6.0了···

这是我第一次编程···我是大大的菜鸟···真的···

我终于知道错哪了···新建联系人一定要和添加联系人区别开 不然原来已经有了的文件会被覆盖掉~！还有一点，就是找record的时候（两个//KEY中间的），不应该是“    Person[i].name==NULL    ”，而应该是“    Person[i].name[0]=='\0'   ”,这个区别大得很啊~~~！这就是为什么我的程序只能运行一次的原因，第二次开始，基本上全错···

其实很多都是为了美化而已···不美化的话，300行差不多了···

这就是完美版的 哈哈~~~

谢谢~！