C语言通讯录管理系统

实现了通讯录的录入信息、保存信息、插入、删除、排序、查找、单个显示等功能。。

完整的代码如下：

#include <stdio.h> #include <malloc.h> //得到指向大小为Size的内存区域的首字节的指针// #include <string.h> #include <stdlib.h> //标准库函数// #define NULL 0 #define LEN sizeof(struct txlproject) //计算字节// int n; struct txlproject { char name[30]; //名字 char work[30]; //职业 char handset[30]; //手机 char email[30]; //电子邮件 char address[30]; //通讯地址 struct txlproject *next; }; struct txlproject *shifang(struct txlproject *head); // 释放内存函数声明 //创建函数，不带头结点的链表 struct txlproject *creat(void) { struct txlproject *head,*p1,*p2; char name[20]; n=0; p1=(struct txlproject *)malloc(LEN); p2=p1; //强制内存转换 printf("请输入通讯录的内容!/n姓名输入为0时表示创建完毕!/n"); printf("请输入姓名:"); gets(name); if(strcmp(name,"0")!=0) { strcpy(p1->name,name); printf("请输入职业:"); gets(p1->work); printf("请输入手机:"); gets(p1->handset); printf("请输入电子邮件:"); gets(p1->email); printf("请输入通讯地址:"); gets(p1->address); head=NULL; while(1) { n=n+1; //记录通讯录人数个数 if(n==1) head=p1; else p2->next=p1; p2=p1; printf("请输入姓名:"); gets(name); if(strcmp(name,"0")==0) { break; } else { p1=(struct txlproject *)malloc(LEN); strcpy(p1->name,name); printf("请输入职业:"); gets(p1->work); printf("请输入手机:"); gets(p1->handset); printf("请输入电子邮件:"); gets(p1->email); printf("请输入通讯地址:"); gets(p1->address); } } p2->next=NULL; return head; } else return 0; } //输出函数 void print(struct txlproject *head) { struct txlproject *p; if(head!=NULL) { p=head; printf("本通讯录现在共有%d人:/n",n); printf("---姓名-------职业--------手机-------Email-------通讯地址/n"); printf("==================================/n"); do { printf("== %s",p->name); printf(" "); printf("%s",p->work); printf(" "); printf("%s",p->handset); printf(" "); printf("%s",p->email); printf(" "); printf("%s",p->address); printf(" /n"); p=p->next; }while(p!=NULL); printf("==================================/n"); } else printf("通讯录为空,无法输出!/n"); } //增加函数 struct txlproject *insert(struct txlproject *head) { struct txlproject *p0,*p1,*p2; char name[20]; p1=head; printf("请输入增加的内容:/n"); printf("请输入姓名:"); gets(name); if(strcmp(name,"0")==0) { printf("姓名不能为0,增加失败!/n"); return(head); } else { p0=(struct txlproject *)malloc(LEN); strcpy(p0->name,name); printf("请输入职业:"); gets(p0->work); printf("请输入手机:"); gets(p0->handset); printf("请输入电子邮件:"); gets(p0->email); printf("请输入通讯地址:"); gets(p0->address); n=n+1; if(head==NULL) { head=p0; p0->next=NULL; return head; } else { while(strcmp(p0->name,p1->name)>0&&(p1->next!=NULL)) { p2=p1; p1=p1->next; } if(strcmp(p0->name,p1->name)<0 || strcmp(p0->name,p1->name)==0) { if(head==p1) { head=p0; } else { p2->next=p0; } p0->next=p1; } else { p1->next=p0; p0->next=NULL; } return head; } } } struct txlproject *delete(struct txlproject *head) { struct txlproject *p,*q; char name[30]; if(head==NULL) { printf("通讯录为空,无法显示!/n"); return head; } p=head; printf("请输入需要删除的人的姓名:"); gets(name); if(strcmp(head->name,name)==0) { head=head->next; free(p); printf("删除操作成功！/n"); return head; } else { q=head,p=head->next; while(p!=NULL) { if(strcmp(p->name,name)==0) { q->next=p->next; free(p); printf("删除操作成功！/n"); return head; } p=p->next; q=q->next; } } } //显示函数 struct txlproject *display(struct txlproject *head) { struct txlproject *p1,*p2; char name[30]; int m; if(head==NULL) { printf("通讯录为空,无法显示!/n"); return head; } p1=head; m=0; printf("请输入需要显示人的姓名:"); gets(name); while(p1!=NULL) { while((strcmp(p1->name,name))!=0 && p1->next!=NULL) { p2=p1; p1=p1->next; } if(strcmp(p1->name,name)==0) { m++; printf("%s的通讯内容如下:/n",name); printf("---姓名--------职业--------手机-------Email------通讯地址/n"); printf("==================================/n"); printf("== %s",p1->name);printf(" "); printf("%s",p1->work);printf(" "); printf("%s",p1->handset);printf(" "); printf("%s",p1->email);printf(" "); printf("%s",p1->address); printf(" /n"); printf("==================================/n"); } p1=p1->next; } if(m==0) { printf("此人未在本通讯录中!/n"); } return(head); } //排序函数 struct txlproject *paixu(struct txlproject *head) { struct txlproject *p1,*p2; int i,j; struct txlproject1 { char name[30]; char work[30]; char handset[30]; char email[30]; char address[30]; }; struct txlproject1 px[200]; struct txlproject1 temp; if(head==NULL) { printf("通讯录为空,无法排序!/n"); return(head); } p1=head; for(i=0;i<n,p1!=NULL;i++) { strcpy(px[i].name,p1->name); strcpy(px[i].work,p1->work); strcpy(px[i].handset,p1->handset); strcpy(px[i].email,p1->email); strcpy(px[i].address,p1->address); p2=p1; p1=p1->next; } head=shifang(head); for(j=0;j<n-1;j++) { for(i=j+1;i<n;i++) { if(strcmp(px[i].name,px[j].name)<0) { temp=px[i]; px[i]=px[j]; px[j]=temp; } } } p1=(struct txlproject *)malloc(LEN); p2=p1; strcpy(p1->name,px[0].name); strcpy(p1->work,px[0].work); strcpy(p1->handset,px[0].handset); strcpy(p1->email,px[0].email); strcpy(p1->address,px[0].address); head=p1; for(i=1;i<n;i++) { p1=(struct txlproject *)malloc(LEN); strcpy(p1->name,px[i].name); strcpy(p1->work,px[i].work); strcpy(p1->handset,px[i].handset); strcpy(p1->email,px[i].email); strcpy(p1->address,px[i].address); p2->next=p1; p2=p1; } p2->next=NULL; printf("按姓名排序后为:/n"); print(head); return(head); } //姓名查找函数 struct txlproject *search(struct txlproject *head) { struct txlproject *p1,*p2; int m; char name[30]; if(head==NULL) { printf("通讯录为空,无法分类查找!/n"); return(head); } p1=head; printf("********************/n"); printf("** 请输入需要查找的姓名 **/n"); printf("********************/n"); m=0; gets(name); while(p1!=NULL) { while(strcmp(p1->name,name)!=0&&p1->next!=NULL) { p2=p1; p1=p1->next; } if(strcmp(p1->name,name)==0) { m++; printf("你查找的内容是:/n"); printf("+++++++++++++++++++++++++++++++++++/n"); printf("++ %s %s %s %s %s/n",p1->name,p1->work,p1->handset,p1->email,p1->address); printf("+++++++++++++++++++++++++++++++++++/n"); } p1=p1->next; if(m==0) { printf("此人未在本通讯录中!/n"); } break; } return(head); } //释放内存函数 struct txlproject *shifang(struct txlproject *head) { struct txlproject *p1; while(head!=NULL) { p1=head; head=head->next; free(p1); } return(head); } //文件写入函数 void save(struct txlproject *head) { FILE *fp; struct txlproject *p1; char tong[30]; if(head==NULL) { printf("通讯录为空,无法存储!/n"); return; } printf("请输入保存后的文件名:"); gets(tong); fp=fopen("(tong).txt","w"); if(fp==NULL) { printf("cannot open file/n"); return; } p1=head; fprintf(fp,"姓名 职业 手机 Email 通讯地址/n"); for(;p1!=NULL;) { fprintf(fp,"%s %s %s %s %s/n",p1->name,p1->work,p1->handset,p1->email,p1->address); p1=p1->next; } printf("保存完毕!/n"); fclose(fp); } //文件读出函数 struct txlproject *load(struct txlproject *head) { FILE *fp; char tong[30]; struct txlproject *p1,*p2; printf("请输入要输出的文件名:"); gets(tong); fp=fopen("(tong).txt","r"); if(fp==NULL) { printf("此通讯录名不存在,无法输出!/n"); return(head); } else { head=shifang(head); } p1=(struct txlproject *)malloc(LEN); fscanf(fp,"%s%s%s%s%s",&p1->name,&p1->work,&p1->handset,&p1->email,&p1->address); if(feof(fp)!=0) { printf("文件为空,无法打开!/n"); return(head); } else { rewind(fp); p2=p1; head=p1; n=0; while(feof(fp)==0) { fscanf(fp,"%s%s%s%s%s",&p1->name,&p1->work,&p1->handset,&p1->email,&p1->address); if(feof(fp)!=0) break; p2->next=p1; p2=p1; p1=(struct txlproject *)malloc(LEN); n=n+1; } p2->next=NULL; p1=head; head=head->next; n=n-1; free(p1); print(head); printf("打开完毕!/n"); return(head); } fclose(fp); } //综合操作函数 struct txlproject *menu(struct txlproject *head) { char num[10]; while(1) { printf("*********************/n"); printf("*** 1 姓名查找 ****/n"); printf("*** 2 单个显示 ****/n"); printf("*** 3 增加 ****/n"); printf("*** 4 退出 ****/n"); printf("*********************/n"); printf("请输入您选择的操作:"); gets(num); switch(*num) { case '1': { head=search(head); //姓名查找 print(head); } break; case '2': { head=display(head); //显示 } break; case '3': { head=insert(head); //增加 print(head); } break; case '4': return head; default: printf("操作错误，此项不存在!/n"); break; } if(strcmp(num,"6")==0) break; } return head; } //主函数 void main() { struct txlproject *head=NULL; char num[10]; printf("*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*/n"); printf("*=* 程序说明 *=*/n"); printf("*=* 请及时保存创建完毕的通讯录内容! *=*/n"); printf("*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*/n"); while(1) { printf("************************/n"); printf("*** 1 创建通讯录 ****/n"); printf("*** 2 按名字排序 ****/n"); printf("*** 3 综合操作 ****/n"); printf("*** 4 保存 ****/n"); printf("*** 5 打开 ****/n"); printf("*** 6 删除 ****/n"); printf("*** 7 退出 ****/n"); printf("************************/n"); printf("请输入您选择的操作:"); gets(num); switch(*num) { case '1': { if(head==NULL) { head=creat(); //创建 print(head); } else { head=shifang(head); head=creat(); //重新创建 print(head); } } break; case '2': { head=paixu(head); //排序 } break; case '3': { head=menu(head); //综合操作 } break; case '4': { save(head); //文件保存 print(head); } break; case '5': { head=load(head); //文件输出 } break; case '6': { head=delete(head); //删除 print(head); } break; case '7': head=shifang(head); break; default: printf("操作错误，此项不存在!/n"); break; } if(strcmp(num,"7")==0) break; } }