- #include<stdio.h>
- #include<stdlib.h>
- #define N 100 //----------------------------------------函数声明
- void init();
- char welcome();
- void InputInfo();
- void view();
- void xiugai();
- void DeleteInfo();
- void paiming1(struct student_info student[]); void paiming2(struct student_info student[]); void ViewAll();
- void PaimingView();
- void exit();
- struct student_info input();
- void SortInfo(struct student_info student[]); void ViewInfo(struct student_info *sp);
- void SaveStruct(struct student_info *sp,int size,int n,char filename[20]);
- void LoadStruct(struct student_info *sp,int size,int n,char filename[20]);
- void SaveInt(int *p,int size,int n,char filename[20]); void LoadInt(int *p,int size,int n,char filename[20]); int NumExist(struct student_info student[],int num);
- //---------------------------------定义学生信息结构体
- struct student_info
- {
- int num; //学号
- char name[6]; //姓名
- char sex[5]; //性别
- char adress[20]; //家庭住址
- char tel[10]; //电话
- int chinese,math,english,huping,pingde,jiaoping,paiming1,paiming2;
- //语文 数学 英语 互评 品德 教评
- double ave,zhongping;
- // 平均 综合
- //每个学生的信息为:学号、姓名、性别、家庭住址、联系电话、语文、数学、外语三门单科成绩、 //考试平均成绩、考试名次、师兄互评分、品德成绩、任课教师评分、综合测评总分、综合测评名次。 //考试平均成绩、师兄互评分、品德成绩、任课教师评分分别占综合测评总分的60%,10%,10%,20%。 };
- //---------------------------------定义全局结构体数据
- };
- struct student_info student[100];
- int counter,PM;
- //----------------------------------------------主函数
- void main()
- {
- char select;
- init(); //调用初始化函数
- while(1)
- {
- select=welcome();
- switch(select)
- {
- case '1': system("cls"); InputInfo(); break; //选项1:输入学生信息
- case '2': system("cls"); xiugai(); break; //选项2:修改学生信息
- case '3': system("cls");DeleteInfo(); break; //选项3:删除学生信息
- case '4': system("cls"); view(); break; //选项4:浏览学生信息
- case '5': system("cls");paiming1(student);paiming2(student);PM=1;getchar();
- getchar(); system("cls"); break; //选项5:学生信息排名
- case '6': system("cls"); ViewAll();break; //选项6:浏览全部学生信息
- case '7': system("cls"); PaimingView();break; //选项7:查询排名
- case '8': system("cls"); exit(); break; //选项8:退出
- }}} //----------------------------------------初始化函数
- void init()
- {
- FILE *fp;
- fp=fopen("counter.dat","rb"); //打开计数变量counter文件
- if(fp!=NULL) //载入counter
- {
- fclose(fp);
- LoadInt(&counter,sizeof(counter),1,"counter.dat");
- }
- else
- {
- fp=fopen("counter.dat","wb"); //若没有counter文件,则创建一个,counter初始为0。
- fclose(fp);
- counter=0;
- }
- if(counter!=0) //载入学生数据
- LoadStruct(student,sizeof(struct student_info),counter,"student_info.dat");
- } //----------------------------------------欢迎函数
- char welcome()
- {
- char select;
- while(1)
- {
- system("cls");
- printf("\t\t欢迎使用学生信息管理系统 \n");
- printf("\n");
- printf("1.录入学生信息 \n\n");
- printf("2.修改学生信息 \n\n");
- printf("3.删除学生信息 \n\n");
- printf("4.浏览学生信息 \n\n");
- printf("5.排名学生成绩 \n\n");
- printf("6.浏览所有学生信息 \n\n");
- printf("7.查询排名 \n\n");
- printf("8.退出 \n\n");
- printf("输入相应的功能序号:");
- select=getchar();
- if(select=='1'||select=='2'||select=='3'||select=='4'||select=='5'||select=='6'||select=='7'||select=='8')
- return select;
- system("cls");
- continue;
- }}
- //----------------------------------1.录入学生信息-----------------------------------
- void InputInfo()
- {
- int i,n;
- printf("需要录入多少位学生的信息:");
- scanf("%d",&n);
- system("cls");
- for(i=1;i<=n;i++)
- {
- student[counter]=input();
- counter++;
- }
- PM=0;
- SortInfo(student);
- SaveStruct(student,sizeof(struct student_info),counter,"student_info.dat");
- SaveInt(&counter,sizeof(counter),1,"counter.dat");
- }
- //-------------------------------------2.修改学生信息----------------------------------------
- void xiugai()
- {
- int i,num;
- char YN,select;
- printf("请输入需要修改的学生信息的学号:");
- scanf("%d",&num);
- getchar();
- if((i=NumExist(student,num))==-1)
- {
- printf("不存在该学号,按回车键返回...");
- getchar();
- system("cls");
- return;
- }
- ViewInfo(&student[i]);
- printf("是否要修改,(Y/N):");
- scanf("%c",&YN);
- getchar();
- if(YN !='Y'&& YN !='y')
- {
- printf("修改取消.");
- getchar();
- system("cls");
- return;
- }
- system("cls");
- printf("1.学号 \n");printf("2.性别 \n");printf("3.家庭住址 \n");printf("4.联系电话 \n");printf("5.语文成绩 \n");
- printf("6.数学成绩 \n");printf("7.外语成绩 \n");printf("8.师兄互评分 \n");printf("9.品德成绩 \n");printf("0.任课教师教师评分 \n");
- scanf("%c",&select);
- switch(select)
- {
- case '1':printf("修改学号:");scanf("%d",&student[i].num);break;
- case '2':printf("修改性别:");scanf("%s",&student[i].sex);break;
- case '3':printf("修改家庭住址:");scanf("%s",&student[i].adress);break;
- case '4':printf("修改联系电话:");scanf("%s",&student[i].tel);break;
- case '5':printf("修改语文成绩:");scanf("%d",&student[i].chinese);break;
- case '6':printf("修改数学成绩:");scanf("%d",&student[i].math);break;
- case '7':printf("修改外语成绩:");scanf("%d",&student[i].english);break;
- case '8':printf("修改师兄互评分:");scanf("%d",&student[i].huping);break;
- case '9':printf("修改品德成绩:");scanf("%d",&student[i].pingde);break;
- case '0':printf("修改任课教师评分:");scanf("%d",&student[i].jiaoping);break;
- }
- SortInfo(student);
- SaveStruct(student,sizeof(struct student_info),counter,"student_info.dat");
- PM=0;
- getchar();
- printf("修改完成...");
- getchar();
- system("cls");
- }
- //-------------------------------------3.删除学生信息----------------------------------------
- void DeleteInfo()
- {
- int i,j,num;
- char YN;
- printf("请输入要删除的学生信息学号:");
- scanf("%d",&num);
- getchar();
- if((i=NumExist(student,num))==-1)
- {
- printf("没有该学号,按回车键返回...");
- getchar();
- system("cls");
- return;
- }
- ViewInfo(&student[i]);
- printf("\n确认删除(Y/N):");
- scanf("%c",&YN);
- getchar();
- if(YN!='Y' && YN!='y')
- {
- printf("删除取消...");
- }
- else
- {
- for(j=i;j<counter-1;j++)
- student[j]=student[j+1];
- counter--;
- PM=0;
- SaveStruct(student,sizeof(struct student_info),counter,"student_info.dat");
- SaveInt(&counter,sizeof(counter),counter,"counter.dat");
- printf("删除完成...");
- }
- getchar();
- system("cls");
- }
- //-------------------------------------4.浏览学生信息----------------------------------------
- void view()
- {
- int i,num;
- printf("请输入需要游览的学生信息的学号:");
- scanf("%d",&num);
- getchar();
- if((i=NumExist(student,num))==-1)
- {
- printf("不存在该学号,按回车键返回...");
- getchar();
- system("cls");
- return;
- }
- ViewInfo(&student[i]);
- printf("\n按回车键返回...");
- getchar();
- system("cls");
- return;
- }
- //-------------------------------------5.平均分、综合分排名------------------------------------
- void paiming1(struct student_info student[])
- {
- struct student_info *p[N],*temp;
- int i,j;
- for(i=0;i<counter;i++)
- p[i]=&student[i];
- for(i=0;i<counter-1;i++)
- for(j=i+1;j<counter;j++)
- {
- if(p[i]->ave < p[j]->ave)
- {
- temp=p[i];
- p[i]=p[j];
- p[j]=temp;
- }
- }
- for(i=0;i<counter;i++)
- p[i]->paiming1=i+1;
- printf("平均分排名完成...\n");
- }
- //综合测评分排名
- void paiming2(struct student_info student[])
- {
- struct student_info *p[N],*temp;
- int i,j;
- for(i=0;i<counter;i++)
- p[i]=&student[i];
- for(i=0;i<counter-1;i++)
- for(j=i+1;j<counter;j++)
- {
- if(p[i]->zhongping < p[j]->zhongping)
- {
- temp=p[i];
- p[i]=p[j];
- p[j]=temp;
- }
- }
- for(i=0;i<counter;i++)
- p[i]->paiming2=i+1;
- printf("综合测评分排名完成...\n"); }
- //----------------------------------6.浏览所有学生信息----------------------------------------
- void ViewAll()
- {
- int i;
- for(i=0;i<counter;i++)
- {
- ViewInfo(&student[i]);
- printf("\n");
- }
- getchar();
- printf("回车键返回...");
- getchar();
- system("cls");
- }
- //----------------------------------------7.查询排名------------------------------
- void PaimingView()
- {
- int i,num;
- printf("输入要查询的学号:");
- scanf("%d",&num);
- getchar();
- i=NumExist(student,num);
- if(i==-1)
- {
- printf("该学号不存在...");
- getchar();
- return;
- }
- if(PM==0)
- {
- printf("请先进行成绩排名...");
- getchar();
- return;
- }
- printf("%s的平均分排名%d\n",student[i].name,student[i].paiming1);
- printf("%s的综合测评分排名%d\n",student[i].name,student[i].paiming2);
- printf("按回车键返回...");
- getchar();
- return;
- }
- //----------------------------------------8.退出----------------------------
- void exit()
- {
- printf("谢谢使用!\n");
- exit(0);
- }
- //----------------------------------------输入信息函数----------------------------------------
- struct student_info input() {
- struct student_info stu,*sp;
- char YN;
- sp=&stu;
- while(1)
- {
- while(1)
- {
- printf("录入学号:");
- scanf("%d",&sp->num);
- getchar();
- if(NumExist(student,sp->num)!=-1)
- {
- printf("该学号已存在,请重新输入...");
- getchar();
- system("cls");
- continue;
- }
- break;
- }
- printf("录入姓名:");
- gets(sp->name);
- printf("录入性别:");
- gets(sp->sex);
- printf("录入家庭住址:");
- gets(sp->adress);
- printf("录入联系电话:");
- gets(sp->tel);
- printf("\n接下来录入成绩\n");
- printf("语文:");
- scanf("%d",&sp->chinese);
- printf("数学:");
- scanf("%d",&sp->math);
- printf("英语:");
- scanf("%d",&sp->english);
- sp->ave=(sp->chinese+sp->math+sp->english)/3.0;
- printf("师兄互评:");
- scanf("%d",&sp->huping);
- printf("品德分数:");
- scanf("%d",&sp->pingde);
- printf("教师评价:");
- scanf("%d",&sp->jiaoping);
- getchar();
- sp->zhongping=(sp->ave*0.6+sp->huping*0.1+sp->pingde*0.1+sp->jiaoping*0.2);
- printf("录入完毕,确认信息是否正确(Y/N)");
- YN=getchar();
- getchar();
- if(YN=='Y'|| YN=='y')
- break;
- else
- {
- printf("按回车键重新录入信息。");
- getchar();
- system("cls");
- continue;
- }
- }
- system("cls");
- return stu;
- }
- //----------------------------------------排序函数
- void SortInfo(struct student_info student[])
- {
- int i,j;
- struct student_info temp;
- for(i=0;i<counter-1;i++)
- for(j=i+1;j<=counter-1;j++)
- {if(student[i].num<student[j].num)
- {temp=student[i];
- student[i]=student[j];
- student[j]=temp;}}
- }
- //----------------------------------------显示学生信息
- void ViewInfo(struct student_info *sp)
- {
- printf("学号\t姓名\t性别\t家庭住址\t联系电话\n");
- printf("%d\t%s\t%s\t%s\t\t%s\n",sp->num,sp->name,sp->sex,sp->adress,sp->tel);
- printf("语文\t数学\t英语\t互评\t品德\t教评\t平均分\t综合分\n");
- printf("%d\t%d\t%d\t%d\t%d\t%d\t%.2f\t%.2f\t\n",sp->chinese,sp->math,sp->english,sp->huping,sp->pingde,sp->jiaoping,sp->ave,sp->zhongping);
- if(PM==1)
- {
- printf("平均分排名\t综合测评分排名\n");
- printf("%d\t\t%d\n",sp->paiming1,sp->paiming2);
- }
- }
- //-----------------------------------信息存盘(结构体)----------------------------------------
- void SaveStruct(struct student_info *sp,int size,int n,char filename[20])
- {
- FILE *fp;
- fp=fopen(filename,"wb");
- fwrite(sp,size,n,fp);
- fclose(fp);
- }
- //-----------------------------------读取信息(结构体)----------------------------------------
- void LoadStruct(struct student_info *sp,int size,int n,char filename[20])
- {
- FILE *fp;
- fp=fopen(filename,"rb");
- fread(sp,size,n,fp);
- fclose(fp);
- }
- //-------------------------------------信息存盘(整型)----------------------------------------
- void SaveInt(int *p,int size,int n,char filename[20])
- {
- FILE *fp;
- fp=fopen(filename,"wb");
- fwrite(p,size,n,fp);
- fclose(fp);
- }
- //-------------------------------------读取信息(整型)----------------------------------------
- void LoadInt(int *p,int size,int n,char filename[20])
- {
- FILE *fp;
- fp=fopen(filename,"rb");
- fread(p,size,n,fp);
- fclose(fp);
- }
- //----------------------------------------检索学号
- int NumExist(struct student_info student[],int num)
- {
- int i;
- for(i=0;i<counter;i++)
- {
- if(student[i].num==num)
- return i;
- }
- return -1;
- }
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