c语言信息管理系统毕业论文

#ifndef H_STUDENT_HH #define H_STUDENT_HH #include "" #include "" #include "" #define LEN sizeof(struct message_student) /*一个结构体数组元素的长度*/ #define numsubs 5 /*学科数目*/ typedef struct message_student /*结构体定义*/ { char number[6]; char name[20]; char sex[4]; float subject[numsubs]; float score; float average; int index; }student; extern int numstus; /*学生数目*/ extern student *pointer; /*指向结构体数组*/ extern int lens; int menu_select(); /*函数声明*/ int openfile(student stu[]); int findrecord(student stud[]); int writetotext(student stud[]); void welcome(); void display1(); void showtable(); void sort(student stu[]); void deleterecord(student stu[],int i); void addrecord(student stud[]); void display(student stud[],int n1,int n2); void amendrecord(student stud[]); void count(student stud[]); void sortnum(student stud[]); void sortnum2(student stud[]); void sortname(student stud[]); void sortname2(student stud[]); void sortcount(student stud[]); void sortcount2(student stud[]); void statistic(student stud[]); void display1(); #endif //#include "" int menu_select() { char c; printf("\n\n"); printf(" | 1. 增加学生记录 5.统计信息 |\n"); printf(" | 2. 查询学生记录 6.打开文件 |\n"); printf(" | 3. 修改学生记录 7.保存文件 |\n"); printf(" | 4. 学生纪录排序 8.显示记录 |\n"); printf(" | 0.退出系统 |\n"); printf("\n\n"); printf("请选择(0-8):"); c=getchar(); getchar(); return (c-'0'); } //#include "" int findrecord(student stud[]) /*查找信息*/ { char str[2]; int i,num; if(numstus==0) { printf("没有可被查找的记录\n"); return -1; } else { printf("以何种方式查找？\n1.学号\t2.姓名\t3.名次\n"); gets(str); if(str[0]=='1') /*按学号查找*/ { printf("请输入学号:"); gets(str); for(i=0;i<=numstus;i++) if(strcmp(str,stud[i].number)==0) { display(stud,i,i); break; } else continue; } else if(str[0]=='2') /*按姓名查找*/ { printf("请输入姓名:"); gets(str); for(i=0;i<=numstus;i++) if(strcmp(str,stud[i].name)==0) { display(stud,i,i); break; } else continue; } else if(str[0]=='3') /*按名次查找*/ { printf("请输入名次:"); scanf("%d",&num); getchar(); for(i=0;i<=numstus;i++) if(num==stud[i].index) { display(stud,i,i); break; } else continue; } if(i>numstus) { printf("没有查找所要的信息。\n"); return -1; } return i; } } //#include"" int openfile(student stu[]) { int i=0,j; FILE *fp; char filename[20],str[2]; if(numstus!=0) { printf("已经有记录存在，是否保存?(y/n)"); gets(str); if(str[0]=='y'||str[0]=='Y') writetotext(stu); } printf("请输入文件名:"); gets(filename); numstus=0; if((fp=fopen(filename,"rb+"))==NULL) { printf("无法打开该文件\n"); return(-1); } fscanf(fp,"%d",&numstus); fgetc(fp); while(i0) { temp=*(p+j); *(p+j)=*(p+j+1); *(p+j+1)=temp; } } } void sortnum2(student stud[]) { int i,j; student temp; student *p; p=stud; for(i=0;i0) { temp=*(p+j); *(p+j)=*(p+j+1); *(p+j+1)=temp; } } } void sortname(student stud[]) { int i,j; student temp; student *p; p=stud; for(i=0;i0) { temp=*(p+j); *(p+j)=*(p+j+1); *(p+j+1)=temp; } } } void sortname2(student stud[]) { int i,j; student temp; student *p; p=stud; for(i=0;i0) { temp=*(p+j); *(p+j)=*(p+j+1); *(p+j+1)=temp; } } } void sortcount(student stud[]) { int i,j; student temp; student *p; p=stud; for(i=0;istud[j].index) { temp=*(p+j); *(p+j)=*(p+j+1); *(p+j+1)=temp; } } } void sortcount2(student stud[]) { int i,j; student temp; student *p; p=stud; for(i=0;istud[j+1].index) { temp=*(p+j); *(p+j)=*(p+j+1); *(p+j+1)=temp; } } } //#include"" void statistic(student stud[]) /*新增功能，输出统计信息*/ { int i,j=0,k=0; char c1,str[2]; float average[numsubs],sum=0; if(numstus==0) printf("没有可被查找的记录\n"); else { while(1) { printf("下面将统计考试成绩\n"); printf("请选择你要统计哪科的成绩 \\\\\n"); c1=getchar(); printf("\t一共有个%d记录\n",numstus); /*总共记录数*/ switch(c1) { case '1': for(i=0;istud[i].subject[0]) k=i; if(stud[j].subject[0]stud[i].subject[1]) k=i; if(stud[j].subject[1]stud[i].subject[2]) k=i; if(stud[j].subject[2]stud[i].subject[3]) k=i; if(stud[j].subject[3]stud[i].subject[4]) k=i; if(stud[j].subject[4] void amendrecord(student stud[]) { char str[5]; /*供用户输入*/ int i=-1,j; if(numstus==0) /*没有记录返回*/ printf("没有可供修改的记录！"); while(i<0) { i=findrecord(stud); if(i>=0) { printf("要删除这个学生的信息吗?(y/n)"); gets(str); if(str[0]=='y'||str[0]=='Y') { deleterecord(stud,i); count(stud); } else { printf("确定要修改这个学生的信息吗?(y/n)"); gets(str); if(str[0]=='y'||str[0]=='Y') { printf("下面请重新输入学生的信息:\n"); printf("请输入学号:"); gets(stud[i].number); printf("请输入姓名:"); gets(stud[i].name); printf("请输入性别(男/女 1/0):"); gets(str); if(str[0]=='0') strcpy(stud[i].sex,"女"); else strcpy(stud[i].sex,"男"); stud[i].score=0; printf("请按顺序输入成绩:"); for(j=0;j=0) { for(j=i;jstud[i].score) stud[i].index++; } } void addrecord(student stud[]) { int i=0,j,num; char str[5]; if(numstus!=0) { printf("已有记录存在是否覆盖?(y/n)\n"); gets(str); if(str[0]=='Y'||str[0]=='y') i=0; else i=numstus; } printf("请输入增加的学生信息条目数:"); scanf("%d",&num); if(i==0) numstus=num; else numstus+=num; if(numstus>lens) { lens+=50; pointer=(student *)realloc(pointer,lens*LEN); } printf("请输入学生信息:\n"); for(;i0) { i=menu_select(); /*控制菜单*/ switch(i) { case 1:addrecord(pointer);break; /*增加学生信息*/ case 2:findrecord(pointer);break; /*查询学生信息*/ case 3:amendrecord(pointer);break; /*修改学生信息*/ case 4:sort(pointer);break; /*学生信息排序*/ case 5:statistic(pointer);break; /*统计信息*/ case 6:openfile(pointer);break; /*打开文件*/ case 7:writetotext(pointer);break; /*保存文件*/ case 8:display(pointer,0,numstus-1);break; /*显示记录*/ case 0: if(numstus!=0) printf("是否保存当前记录?(y/n)"); gets(str); if(str[0]=='y'||str[0]=='Y') writetotext(pointer); i=-1;break; /*退出系统*/ default:printf("请输入数字0~8:\n");i=1; /*输入错误*/ } } printf("\t\t欢迎再次使用本系统。\n\n"); display1(); }

摘 要 随着信息技术在管理上越来越深入而广泛的应用，管理信息系统的实施在技术上已逐步成熟。管理信息系统是一个不断发展的新型学科，任何一个单位要生存要发展，要高效率地把内部活动有机地组织起来，就必须建立与自身特点相适应的管理信息系统。 本文介绍了在Visual C++环境下采用“自上而下地总体规划，自下而上地应用开发”的策略开发一个管理信息系统的过程。通过分析某一学校学生管理的不足，创建了一套行之有效的计算机管理学生的方案。文章介绍了学生管理信息系统的系统分析部分，包括可行性分析、业务流程分析等；系统设计部分主要介绍了系统功能设计和数据库设计及代码设计；系统实现部分说明了几个主要模块的算法，并附带了一些主要的窗口和程序。 本系统界面友好，操作简单，比较实用。 【关键字： 管理信息系统、学生管理、Visual C++应用。 Summary With more and more widespread and profound application of information technology in management the implement of management information system has become mature in technology step by step. Managing information system is a new subject. Enterprise needs existence and development so enterprise activities should be organized efficiently and organically which means tightening up the enterprise management and strengthening effective management of any resource (staff finance property etc.) internal the enterprise and also establishing a management information system fitting in with its own characteristics. This article introduces the detailed process of exploring a management information system under the environment of visual foxpro utilizing “Top-Bottom” overall plan and a strategy according to “Bottom-Top” application and exploitation. That is to establish a set of effective scheme for student management by computer through analyzing disadvantages of student management by human resources. This article emphasizes on three sections. The system analysis section of student management information includes feasible analysis management function system design section mainly focuses on system function design and data base design and data number design. And the system realization section has provided several major function together with the main windows and programs. This economical and pragmatic system has explicit interface with simple operation. [Keywords] ： MIS、student management、Visual C++ application