第一次写这么长的程序，代码仅供参考，有问题请留言。
/*
**学生信息管理系统
**IDE：Dev-Cpp 4.9.9.2
**2014-6-15
*/
#include
#include
#include
#include
#include
using std::sort;
using std::vector;
/*==存储单元节点==*/
struct student{
//字符数组方便统一输入
char name[50], address[100], email[50], id[20],
age[5], birth[20], tel[20], gender[5];
};
vector myvec;
/*==========函数声明区==========*/
/*-打印主菜单声明-*/
void printMainMenu();
/*-主界面各函数声明-*/
void enterInformation(); //1
void browseInformation(); //2
void inquireInformation(); //3
void modifyInformation(); //4
void deleteInformation(); //5
void saveToFile();//6
void readFromFile();//7
void exitInformation(); //0
/*--主界面函数的子函数声明--*/
void inquireOneStudent(student *);
void modifyOneStudent(student *);
/*--修改单项信息--*/
void modifyOneId(student *);
void modifyOneName(student *);
void modifyOneAge(student *);
void modifyOneGender(student *);
void modifyOneBirth(student *);
void modifyOneTel(student *);
void modifyOneAddress(student *);
void modifyOneEmail(student *);
void modifyToMain(student *); //这个其实不需要形参，只是为了统一跳转表接口
/*--删除一个学生--*/
void deleteOneStudent(student *);
/*--显示一个学生的所有信息--*/
void displayOneStudent(student *);
/*--浏览方式--*/
void browsePlain(); //直接浏览
void browseById();
void browseByName();
void browseByBirth();
void browseToMain();
/*--查询方式--*/
void inquireById();
void inquireByName();
/*-函数指针数组-*/
void (*mainPointerArr[])() = {
exitInformation, enterInformation,
browseInformation, inquireInformation,
modifyInformation, deleteInformation, saveToFile, readFromFile
};
void (*modifyOne[])(student *) = {
modifyToMain, modifyOneId, modifyOneName,
modifyOneAge, modifyOneGender, modifyOneBirth,
modifyOneTel, modifyOneAddress, modifyOneEmail
};
void (*browseArray[])() = {
browseToMain, browsePlain, browseById,
browseByName, browseByBirth
};
/*==========函数定义区==========*/
/*-主界面菜单函数-*/
void printMainMenu(){
printf("\t\t\t河南理工大学学生信息管理系统\n\n");
printf("\t\t ======================================\n");
printf("\t\t ||\t\t1、学生信息录入 \t||\n");
printf("\t\t ||\t\t2、学生信息浏览 \t||\n");
printf("\t\t ||\t\t3、学生信息查询 \t||\n");
printf("\t\t ||\t\t4、学生信息修改 \t||\n");
printf("\t\t ||\t\t5、学生信息删除 \t||\n");
printf("\t\t ||\t\t6、学生信息存档 \t||\n");
printf("\t\t ||\t\t7、学生信息读档 \t||\n");
printf("\t\t ||\t\t0、退出管理系统 \t||\n");
printf("\t\t ======================================\n");
printf("\t\t\t\t\t\t原创作者：邱正钢\n");
printf("\t\t\t\t\t\t完成时间：2014年6月17日\n");
printf("\t\t\t\t\t\tEmail：2276479303@qq.com\n");
printf("请选择功能：");
int num;
scanf("%d", &num);
(*mainPointerArr[num])();
}
/*-信息录入-*/
void enterInformation(){ //1
system("cls");
printf("输入学生信息：\n");
printf("请输入学号：");
int len; student temp;
while(gets(temp.id) && !strlen(temp.id))
; //过滤缓存回车
printf("请输入姓名：");
while(gets(temp.name) && !strlen(temp.name))
; //过滤缓存回车
printf("请输入年龄：");
while(gets(temp.age) && !strlen(temp.age))
; //过滤缓存回车
printf("请输入性别：");
while(gets(temp.gender) && !strlen(temp.gender))
; //过滤缓存回车
printf("请输入生日：");
while(gets(temp.birth) && !strlen(temp.birth))
; //过滤缓存回车
printf("请输入电话：");
while(gets(temp.tel) && !strlen(temp.tel))
; //过滤缓存回车
printf("请输入地址：");
while(gets(temp.address) && !strlen(temp.address))
; //过滤缓存回车
printf("请输入Email：");
while(gets(temp.email) && !strlen(temp.email))
; //过滤缓存回车
myvec.push_back(temp);
system("cls");
printf("OK,录入成功，该学生信息如下：\n");
len = myvec.size() - 1;
inquireOneStudent(&myvec[len]);
}
void browseInformation(){ //2
if(myvec.empty()){
printf("没有检测到任何学生信息！请在录入后再浏览！\n系统将返回到主界面\n");
system("pause");
browseToMain();
}
printf("请选择功能：\n");
printf("1、直接浏览\n");
printf("2、按学号排序后浏览\n");
printf("3、按姓名排序后浏览\n");
printf("4、按生日排序后浏览\n");
printf("0、返回主菜单\n");
int num; scanf("%d", &num);
(*browseArray[num])();
browseInformation();
}
void inquireInformation(){ //3
if(myvec.empty()){
printf("没有数据，无法查询！系统将退到主菜单\n");
system("pause");
browseToMain();
return;
}
printf("请选择功能：");
printf("1、输入学号查询\n");
printf("2、输入姓名查询\n");
printf("0、返回主菜单\n");
int num; scanf("%d", &num);
if(num == 1) inquireById();
else if(num == 2) inquireByName();
system("pause");
browseToMain();
}
void modifyInformation(){ //4
printf("请输入要更改的学生学号：");
char buf[20];
while(gets(buf), !strlen(buf))
; //依然是过滤空串
vector::iterator it = myvec.begin();
for( ; it != myvec.end(); ++it){
if(strcmp(buf, it->id) == 0){
modifyOneStudent(&myvec[it - myvec.begin()]);
return;
}
}
printf("没有找到！\n");
}
void deleteInformation(){ //5
if(myvec.empty()){
printf("没有数据可供删除，系统将返回到主菜单。\n");
system("pause");
browseToMain();
return;
}
printf("请选择功能：\n");
printf("1、清空所有数据\n");
printf("2、删除特定学生的信息\n");
printf("0、返回主菜单\n");
int num; scanf("%d", &num);
if(1 == num){
myvec.clear();
printf("成功清除所有信息\n");
return;
}else if(2 == num){
char buf[20];
printf("请输入学生学号：");
while(gets(buf), !strlen(buf))
;
vector::iterator it = myvec.begin();
for( ; it != myvec.end(); ++it){
if(!strcmp(buf, it->id)){
deleteOneStudent(&myvec[it - myvec.begin()]); return;
}
}
printf("未找到该学生！\n");
}
system("pause");
browseToMain();
}
void saveToFile(){//6
if(myvec.empty()){
printf("数据为空，无法存储，请在录入信息后再存储到文件！系统将返回到主菜单！\n");
system("pause");
browseToMain();
return;
}
FILE *fp = fopen("studentInformation.txt", "w");
vector::iterator it = myvec.begin();
for( ; it < myvec.end(); ++it){
fprintf(fp, "%s\n", it->id);
fprintf(fp, "%s\n", it->name);
fprintf(fp, "%s\n", it->age);
fprintf(fp, "%s\n", it->gender);
fprintf(fp, "%s\n", it->birth);
fprintf(fp, "%s\n", it->tel);
fprintf(fp, "%s\n", it->address);
fprintf(fp, "%s\n", it->email);
}
fclose(fp);
printf("OK, 存档完成！系统将返回到主界面。\n");
system("pause"); browseToMain();
}
void readFromFile(){//7
FILE *fp = fopen("studentInformation.txt", "rb");
if(fp == NULL){
printf("未检测到存档文件！系统将返回到主界面。\n");
system("pause");
browseToMain();
return;
}
student it;
myvec.clear();
while(fscanf(fp, "%s", it.id) == 1){
fscanf(fp, "%s", it.name);
fscanf(fp, "%s", it.age);
fscanf(fp, "%s", it.gender);
fscanf(fp, "%s", it.birth);
fscanf(fp, "%s", it.tel);
fscanf(fp, "%s", it.address);
fscanf(fp, "%s", it.email);
myvec.push_back(it);
}
fclose(fp);
if(myvec.empty()){
printf("读取存档失败！系统将返回到主界面！\n");
}else{
printf("读取存档成功！系统将返回到主界面！\n");
}
system("pause");
browseToMain();
}
void exitInformation(){ //0
printf("感谢您的使用！再见\n");
system("pause");
exit(EXIT_SUCCESS);
}
void displayOneStudent(student *stu){
printf("*****************************\n");
printf("学号：%s\n", stu->id);
printf("姓名：%s\n", stu->name);
printf("年龄：%s\n", stu->age);
printf("性别：%s\n", stu->gender);
printf("生日：%s\n", stu->birth);
printf("电话：%s\n", stu->tel);
printf("地址：%s\n", stu->address);
printf("Email：%s\n", stu->email);
printf("*****************************\n");
}
void inquireOneStudent(student *stu){
displayOneStudent(stu);
printf("请选择操作：\n");
printf("1、更改该学生信息\n");
printf("2、删除该学生信息\n");
printf("0、返回主菜单\n");
int num;
label:scanf("%d", &num);
if(num == 1) modifyOneStudent(stu);
else if(num == 2) deleteOneStudent(stu);
else if(num == 0) modifyToMain(stu);
else goto label;
}
void modifyOneStudent(student *stu){
system("cls");
printf("修改当前学生信息：\n");
printf("1、修改学号\n");
printf("2、修改姓名\n");
printf("3、修改年龄\n");
printf("4、修改性别\n");
printf("5、修改生日\n");
printf("6、修改电话\n");
printf("7、修改地址\n");
printf("8、修改Email\n");
printf("0、返回主菜单\n");
int num; scanf("%d", &num);
(*modifyOne[num])(stu);
}
void modifyOneId(student *stu){
printf("请输入新的学号：");
while(gets(stu->id) && !strlen(stu->id))
; //过滤缓存回车
printf("修改成功！更改后的学生信息如下:\n");
inquireOneStudent(stu);
}
void modifyOneName(student *stu){
printf("请输入新的姓名：");
while(gets(stu->name) && !strlen(stu->name))
; //过滤缓存回车
printf("修改成功！更改后的学生信息如下:\n");
inquireOneStudent(stu);
}
void modifyOneAge(student *stu){
printf("请输入新的年龄：");
while(gets(stu->age) && !strlen(stu->age))
; //过滤缓存回车
printf("修改成功！更改后的学生信息如下:\n");
inquireOneStudent(stu);
}
void modifyOneGender(student *stu){
printf("请输入新的性别：");
while(gets(stu->gender) && !strlen(stu->gender))
; //过滤缓存回车
printf("修改成功！更改后的学生信息如下:\n");
inquireOneStudent(stu);
}
void modifyOneBirth(student *stu){
printf("请输入新的生日：");
while(gets(stu->birth) && !strlen(stu->birth))
; //过滤缓存回车
printf("修改成功！更改后的学生信息如下:\n");
inquireOneStudent(stu);
}
void modifyOneTel(student *stu){
printf("请输入新的电话：");
while(gets(stu->tel) && !strlen(stu->tel))
; //过滤缓存回车
printf("修改成功！更改后的学生信息如下:\n");
inquireOneStudent(stu);
}
void modifyOneAddress(student *stu){
printf("请输入新的地址：");
while(gets(stu->address) && !strlen(stu->address))
; //过滤缓存回车
printf("修改成功！更改后的学生信息如下:\n");
inquireOneStudent(stu);
}
void modifyOneEmail(student *stu){
printf("请输入新的Email：");
while(gets(stu->email) && !strlen(stu->email))
; //过滤缓存回车
printf("修改成功！更改后的学生信息如下:\n");
inquireOneStudent(stu);
}
void modifyToMain(student *stu){
system("cls");
printMainMenu();
}
void deleteOneStudent(student *stu){
vector::iterator it;
it = myvec.begin() + (stu - &myvec[0]);
myvec.erase(it);
printf("删除成功！\n");
}
/*--cmp函数定义--*/
bool cmpById(student a, student b){
if(strcmp(a.id, b.id) < 0) return true;
}
bool cmpByName(student a, student b){
if(strcmp(a.name, b.name) < 0) return true;
}
bool cmpByBirth(student a, student b){
if(strcmp(a.birth, b.birth) < 0) return true;
}
/*--浏览方式--*/
void browsePlain(){ //直接浏览
if(myvec.empty()){
printf("数据为空！将返回主菜单。\n");
system("pause");
modifyToMain(NULL);
}
vector::iterator stu = myvec.begin();
for( ; stu != myvec.end(); ++stu)
displayOneStudent(&myvec[stu - myvec.begin()]);
}
void browseById(){
if(myvec.empty()){
printf("数据为空！将返回主菜单。\n");
system("pause");
modifyToMain(NULL);
}
sort(myvec.begin(), myvec.end(), cmpById);
vector::iterator stu = myvec.begin();
for( ; stu != myvec.end(); ++stu)
displayOneStudent(&myvec[stu - myvec.begin()]);
}
void browseByName(){
if(myvec.empty()){
printf("数据为空！将返回主菜单。\n");
system("pause");
modifyToMain(NULL);
}
sort(myvec.begin(), myvec.end(), cmpByName);
vector::iterator stu = myvec.begin();
for( ; stu != myvec.end(); ++stu)
displayOneStudent(&myvec[stu - myvec.begin()]);
}
void browseByBirth(){
if(myvec.empty()){
printf("数据为空！将返回主菜单。\n");
system("pause");
modifyToMain(NULL);
}
sort(myvec.begin(), myvec.end(), cmpByBirth);
vector::iterator stu = myvec.begin();
for( ; stu != myvec.end(); ++stu)
displayOneStudent(&myvec[stu - myvec.begin()]);
}
void browseToMain(){
system("cls");
printMainMenu();
}
/*--查询方式--*/
void inquireById(){
printf("请输入要查询的学生学号：");
char buf[20]; int ok = 0;
while(gets(buf), !strlen(buf))
; //依然是过滤空串
vector::iterator it = myvec.begin();
for( ; it != myvec.end(); ++it){
if(strcmp(buf, it->id) == 0){
displayOneStudent(&myvec[it - myvec.begin()]);
ok = 1;
}
}
if(0 == ok) printf("没有找到！\n");
}
void inquireByName(){
printf("请输入要查询的学生姓名：");
char buf[20]; int ok = 0;
while(gets(buf), !strlen(buf))
; //依然是过滤空串
vector::iterator it = myvec.begin();
for( ; it != myvec.end(); ++it){
if(strcmp(buf, it->name) == 0){
displayOneStudent(&myvec[it - myvec.begin()]);
ok = 1;
}
}
if(0 == ok) printf("没有找到！\n");
}
/*==========主函数==========*/
int main(){
printMainMenu();
return 0;
}
