本文主要是介绍C语言模拟实现职工信息管理系统,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
代码实现如下:
#include <stdio.h>//输入、输出指令
#include <malloc.h>//在内存中动态的分配size字节的存储区
#include <string.h>//字符串相关操作指令
#include <stdlib.h>//五种类型、一些宏和通用工具函数
#include<conio.h>//通过键盘产生的对应操作
#include <MEMORY.H>//存储访问头文件typedef struct node
{ char name[20];int age;int worktime;char sex[20];char marrige[20];int grade;char tired[20];struct node *next;
}STU;void output(STU *head);
STU *Create();
STU *findByName(STU *head,char *name);
STU *findByWorktime(STU *head,int worktime);
STU *findByGrade(STU *head,int grade);
void find(STU *head);
STU *insert(STU *head);
STU *findByNumEx(STU *head,char num[],STU **ppbefore);
STU *del(STU *head);
void update(STU *head);
void sort(STU *head);
void save_info(STU *head);
void copy();
STU *load_info();
char *password();void main()
{ char *p;int i,n=0; char a[40];printf(" \t\t*******欢迎使用职工信息管理系统********\n\n"); printf(" \t\t请输入口令:\n");printf(" \t\t----------:\n");for(i=0;i<3;i++){ n=n+1;printf(" \t\t第%d次输入:",i+1);p=password();if(p!=NULL){STU *head;int choice;int n;head=NULL;printf("\n \t\t你是合法用户!\n\n");for (i = 0; i < 0x7FFFFFF; i++);for (i = 0; i < 0x7FFFFFF; i++);for (i = 0; i < 0x7FFFFFF; i++);system("cls");for(;;){system("cls");printf(" \t\t*******职工信息管理系统********\n");printf(" \t\t* 1.输入职工信息 *\n");printf(" \t\t* 2.显示全部职工信息 *\n");printf(" \t\t* 3.查询职工信息 *\n");printf(" \t\t* 4.新增职工信息 *\n");printf(" \t\t* 5.删除职工信息 *\n");printf(" \t\t* 6.修改职工信息 *\n");printf(" \t\t* 7.对职工信息排序 *\n");printf(" \t\t* 8.保存当前信息到文件 *\n");printf(" \t\t* 9.备份信息资料到文件 *\n");printf(" \t\t* 10.从文件加载职工信息 *\n");printf(" \t\t* 0.退出系统 *\n");printf(" \t\t*******************************\n");printf(" \t\t请选择(0-9):");scanf("%d",&choice);if(choice==0) break;switch(choice){ case 1: head=Create(); break;case 2: output(head);break;case 3:find(head);break;case 4: head=insert(head); break;case 5: head=del(head); break;case 6: update(head);break;case 7: sort(head);break;case 8: save_info(head);break;case 9: copy();break;case 10:head=load_info();break;}printf("按任意键继续....");getch();}printf(" \t\t感谢您的使用,再见!\n");break;}else{ printf("\n \t\t你是非法用户!\n\n");if(n==3)printf(" \t\t你的错误口令次数超过3次,程序关闭!\n");}}
}STU *Create()
{STU *head,*pnew,*pend;head=NULL;printf("输入职工信息:\n姓名\t年龄\t工龄\t性别\t婚姻\t级别\t是否在职\n");for(;;) {pnew=(STU *)malloc(sizeof(STU));scanf("%s",pnew->name);if(strcmp(pnew->name,"0")==0){printf("员工信息录入完毕\n");break;}scanf("%d%d%s%s%d%s",&pnew->age,&pnew->worktime,pnew->sex,pnew->marrige,&pnew->grade,pnew->tired);pnew->next=NULL; if(head==NULL){head=pnew;pend=pnew;}else{pend->next=pnew;pend=pend->next;}}return head;
}void output(STU *head)
{STU *p;printf("职工信息如下:\n姓名\t年龄\t工龄\t性别\t婚姻\t级别\t是否在职\n");for(p=head;p!=NULL;p=p->next)printf("%s\t%d\t%d\t%s\t%s\t%d\t%s\n",p->name,p->age,p->worktime,p->sex,p->marrige,p->grade,p->tired);
}void find(STU *head)
{STU *p;char name[20];int worktime,grade,i;int choice;system("cls");for(;;){system("cls");printf(" \t\t*******职工信息查询系统********\n");printf(" \t\t* 1.按职工姓名查找 *\n");printf(" \t\t* 2.按职工工龄查找 *\n");printf(" \t\t* 3.按职工级别查找 *\n");printf(" \t\t* 0.退出系统 *\n");printf(" \t\t*******************************\n");printf(" \t\t请选择(0-3):");scanf("%d",&choice);if(choice==0) break;switch(choice){ case 1:printf("请输入职工姓名:");scanf("%s",name);p=findByName(head,name);break;case 2: printf("请输入职工工龄:");scanf("%d",&worktime);p=findByWorktime(head,worktime);break;case 3:printf("请输入职工级别:");scanf("%d",&grade);p=findByGrade(head,grade);break;}if(p==NULL){ printf("无与此职工相关的信息!\a\n");}else{if(choice==1){ printf("职工信息如下:\n姓名\t年龄\t工龄\t性别\t婚姻\t级别\t是否在职\n"); for(p=head;p!=NULL;p=p->next){if(strcmp(p->name,name)==0)printf("%s\t%d\t%d\t%s\t%s\t%d\t%s\n",p->name,p->age,p->worktime,p->sex,p->marrige,p->grade,p->tired);}}else if(choice==2){ printf("职工信息如下:\n姓名\t年龄\t工龄\t性别\t婚姻\t级别\t是否在职\n");for(p=head;p!=NULL;p=p->next){if(p->worktime==worktime)printf("%s\t%d\t%d\t%s\t%s\t%d\t%s\n",p->name,p->age,p->worktime,p->sex,p->marrige,p->grade,p->tired);}}else if(choice==3){ printf("职工信息如下:\n姓名\t年龄\t工龄\t性别\t婚姻\t级别\t是否在职\n");for(p=head;p!=NULL;p=p->next){if(p->grade==grade)printf("%s\t%d\t%d\t%s\t%s\t%d\t%s\n",p->name,p->age,p->worktime,p->sex,p->marrige,p->grade,p->tired);}}}printf("按任意键继续....");getch();
}
printf(" \t\t您已退出查询系统\n\n");
}STU *findByName(STU *head,char *name)
{STU *p,*result=NULL;for(p=head;p!=NULL;p=p->next)if(strcmp(p->name,name)==0){result=p;break;}
return result;
}STU *findByWorktime(STU *head,int worktime)
{STU *p,*result=NULL;for(p=head;p!=NULL;p=p->next)if(p->worktime==worktime){result=p;break;}
return result;
}STU *findByGrade(STU *head,int grade)
{STU *p,*result=NULL;for(p=head;p!=NULL;p=p->next)if(p->grade==grade){result=p;break;}return result;
}STU *insert(STU *head)
{STU *pnew,*pcur,*pbefore,*p;int choice;printf("输入职工信息:\n");for(;;){//1.申请一个新节点并赋值pnew=(STU *)malloc(sizeof(STU));printf("职工信息如下:\n姓名\t年龄\t工龄\t性别\t婚姻\t级别\t是否在职\n");scanf("%s%d%d%s%s%d%s",pnew->name,&pnew->age,&pnew->worktime,pnew->sex,pnew->marrige,&pnew->grade,pnew->tired);pnew->next=NULL;//2.将新节点插入到链表//若链表为空,则直接插入;若链表不为空,则查找位置,然后插入if(head==NULL){head=pnew; }else{pcur=NULL;for(p=head;p!=NULL;pbefore=p,p=p->next)if(strcmp(p->name,pnew->name)==1){pcur=p;break;}//查找之后,判断pcur是否为空,//若pcur为空,则pnew所指节点应插入到链表尾部 if(pcur==NULL){pbefore->next=pnew; }//若pcur非空,则pnew所指节点应插入到pcur之前,pbefore之后,此时,又分两种情况://pcur指向的是首节点,或者pcur指向后续节点;else{if(pcur==head){pnew->next=pcur;head=pnew;}else{pnew->next=pcur;pbefore->next=pnew;}}}printf("请选择:按1继续添加->按0结束添加\n");printf("choice=");scanf("%d",&choice);if(choice==0){ printf("信息添加完毕!\n");break;}}return head;
}STU *del(STU *head)
{STU *presult,*pbefore;char name[20];printf("要删除的职工信息:");scanf("%s",&name);presult=findByNumEx(head,name,&pbefore);if(presult!=NULL){printf("找到了!职工信息如下:\n姓名\t年龄\t工龄\t性别\t婚姻\t级别\t是否在职\n"); printf("%s\t%d\t%d\t%s\t%s\t%d\t%s\n",presult->name,presult->age,presult->worktime,presult->sex,presult->marrige,presult->grade,presult->tired); if(presult==head){head=presult->next;}else{pbefore->next=presult->next;}printf("删除成功---> ");}elseprintf("无与此职工相关的信息\a\a\n");return head;
}//函数说明:
// 在head所指向链表中,查找学号为num的节点
// 找到后,返回两个值:指向当前节点的指针presult,指向当前节点的前一节点的指针pbefore,
// presult通过函数返回值返回(即return),pbefore通过输出型参数ppBefore返回
STU *findByNumEx(STU *head,char name[],STU **ppbefore)
{STU *p,*presult=NULL,*pbefore=NULL;for(p=head;p!=NULL;pbefore=p,p=p->next)if(strcmp(p->name,name)==0){presult=p;break;}if(p==NULL)pbefore=NULL;*ppbefore=pbefore;return presult;
}void update(STU *head)
{STU *presult;char name[20];printf("输入要修改员工姓名:\n");scanf("%s",name);presult=findByName(head,name);if(presult==NULL)printf("查无此人!无法修改!\a\n");else{printf("找到了!职工信息如下:\n姓名\t年龄\t工龄\t性别\t婚姻\t级别\t是否在职\n"); printf("%s\t%d\t%d\t%s\t%s\t%d\t%s\n",presult->name,presult->age,presult->worktime,presult->sex,presult->marrige,presult->grade,presult->tired); printf("请输入修改信息:\n");printf("姓名\t年龄\t工龄\t性别\t婚姻\t级别\t是否在职\n"); scanf("%s%d%d%s%s%d%s",presult->name,&presult->age,&presult->worktime,presult->sex,presult->marrige,&presult->grade,presult->tired);printf("修改完毕---> ");}
}void sort(STU *head)//按级别排序
{STU *pi,*pj,*pindex,*p;STU temp;int len=sizeof(STU)-sizeof(STU *);int i,j,n=0;for(p=head;p!=NULL;p=p->next)n++;for(pi=head,i=0;i<n-1;i++,pi=pi->next){pindex=pi;for(pj=pi->next,j=i+1;j<n;j++,pj=pj->next)if(pindex->grade> pj->grade)pindex=pj;memcpy(&temp,pi,len); memcpy(pi,pindex,len); memcpy(pindex,&temp,len); }printf("排序完毕---> ");
}void save_info(STU *head)
{char filename[20];FILE *fp;STU *p;printf("保存当前信息到文件的处理\n");printf("请输入文件名:");scanf("%s",filename);if((fp=fopen(filename,"w"))==NULL){printf("无法打开文件\n");return;}fprintf(fp,"全部职工信息如下:\n姓名\t年龄\t工龄\t性别\t婚姻\t级别\t是否在职\n");for(p=head;p!=NULL;p=p->next)fprintf(fp,"%s\t%d\t%d\t%s\t%s\t%d\t%s\n",p->name,p->age,p->worktime,p->sex,p->marrige,p->grade,p->tired);fprintf(fp,"%d",0);fclose(fp);printf("保存完成!--->");
}void copy()
{FILE *in,*out;char infile[40],ch;char outfile[40];printf("现在进入学生信息文件的备份\n");printf("源文件名:");scanf("%s",infile);printf("备份文件名:");scanf("%s",outfile);if((in=fopen(infile,"r"))==NULL){printf("文件无法打开\n");exit(0);}if((out=fopen(outfile,"w"))==NULL){printf("文件无法打开\n");exit(0);}ch=fgetc(in);while(ch!=EOF){fputc(ch,out);ch=fgetc(in);} fclose(in);fclose(out);printf("备份成功!\n");
}STU *load_info()
{STU *head=NULL,*pnew,*pend;char filename[20];char a[20];FILE *fp;int i;printf(" \t\t文件加载职工信息,输入文件名:");scanf("%s",filename);if((fp=fopen(filename,"r"))==NULL){printf(" \t\t加载失败!\n");exit(0);}for(i=0;i<8;i++)fscanf(fp,"%s",a);for(;;){pnew=(STU *)malloc(sizeof(STU));fscanf(fp,"%s",&pnew->name);if(strcmp(pnew->name,"0")==0)break;fscanf(fp,"%d%d%s%s%d%s",&pnew->age,&pnew->worktime,&pnew->sex,&pnew->marrige,&pnew->grade,&pnew->tired);pnew->next=NULL;if(head==NULL){head=pnew;pend=pnew;}else{pend->next=pnew;pend=pnew;}}fclose(fp);printf(" \t\t加载成功!\n");return head;
}char *password()
{char password[100],c;char *result=NULL;int e,count;e=0;count=0;while((c=getch())!=13&&e<100)//13为回车{ if(c==8&&e>0)//8为退格{password[e--]='\0';//删除最后一个,并且计数器减1printf("\b \b");//退格}else{password[e++]=c;printf("*");//覆盖*号,当输出空格覆盖前一个字符后,再一次前移,以便下一次输入}}password[e]='\0';if(strcmp(password,"123456")==0)result=1; return result;
}
程序运行效果
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