基于C++如何实现信息管理系统

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1、使用类+函数实现
2、使用STL容器的vector
3、fstream的文件存储方式
4、xls文件读入 写出
5、数据的四大功能增删改查
6、一定的输入容错能力

#include #include #include #include #include #include #include #include #include #define Num 20#define FALSE 0#define TRUE 1#define PATH "./file.xls"using namespace std;class LiangshanHeros{public:    char name[Num]; //梁山好汉姓名    int age;        //年龄    char loc[Num];  //籍贯    double bounty;   //悬赏金public:    LiangshanHeros()    {        age = 18;        bounty = 6666;    }    LiangshanHeros(char* _name, int _age, char* _loc, double the_bounty)    {        strcpy(name, _name);        age = _age;        strcpy(loc, _loc);        bounty = the_bounty;    }    ~LiangshanHeros()    {    }public:    char* getName();    char* getLoc();    double getBounty();    int getAge();public:    int setName(char*);    int setAge(int);    int setLoc(char*);    int setprice(double);public:    void showMenu();};class params : public LiangshanHeros {public :    params() {    }    ~params() {    }public:    void InitSet();    void showMensu();};char* LiangshanHeros::getName(){    return name;}char* LiangshanHeros::getLoc(){    return loc;}double LiangshanHeros::getBounty(){    return bounty;}int LiangshanHeros::getAge(){    return age;}int LiangshanHeros::setName(char* _name){    if (strlen(_name) > 20 || strlen(_name) < 2)    {        cout << "重新输入梁山好汉姓名 长度[0 - 20]" << endl;        return FALSE;    }    else    {        strcpy(name, _name);        return TRUE;    }}int LiangshanHeros::setAge(int _age){    if (_age > 100 || _age < 0)    {        cout << "重新输入年龄 大小[0 - 100]" << endl;        return FALSE;    }    else    {        age = _age;        return TRUE;    }}int LiangshanHeros::setLoc(char* _loc){    if (strlen(_loc) > 20 || strlen(_loc) < 2)    {        cout << "重新输入梁山好汉籍贯 长度[0 - 20]" << endl;        return FALSE;    }    else    {        strcpy(loc, _loc);        return TRUE;    }}int LiangshanHeros::setprice(double the_Bouney){    if (the_Bouney < 0)    {        cout << "重新输入价格 大小[0 - &]" << endl;        return FALSE;    }    else    {        bounty = the_Bouney;        return TRUE;    }}void setAll(LiangshanHeros* par){    while (1)    {        cout << "输入梁山好汉姓名: " << endl;        char n[Num] = { 0 };        cin >> n;        if (par->setName(n) == TRUE) break;    }    while (1)    {        cout << "输入年龄: " << endl;        int a;        cin >> a;        if (par->setAge(a) == TRUE) break;    }    while (1)    {        cout << "输入梁山好汉籍贯: " << endl;        char l[Num] = { 0 };        cin >> l;        if (par->setLoc(l) == TRUE) break;    }    while (1)    {        cout << "输入赏金: " << endl;        double p;        cin >> p;        if (par->setprice(p) == TRUE) break;    }}LiangshanHeros* set(){    LiangshanHeros* par = new LiangshanHeros;    //do set    setAll(par);    return par;}void search(vector& vec, char* name){    int i = 0;    int flag = 0;    for (i = 0; i < vec.size(); i++)    {        if (strcmp(vec[i]->name, name) == 0)        {            cout << "查找成功 " << endl;            cout << vec[i]->getName() << endl;            cout << vec[i]->getAge() << endl;            cout << vec[i]->getLoc() << endl;            cout << vec[i]->getBounty() << endl;            flag = 1;        }    }    //case faild    if (flag == 0)    {        cout << "查找失败" << endl;    }}void deletePar(vector& vec, char* name){    int i = 0;    int flag = 0;    for (i = 0; i < vec.size(); i++)    {        if (strcmp(vec[i]->name, name) == 0)        {            cout << "查找成功 " << endl;            cout << vec[i]->getName() << endl;            cout << vec[i]->getAge() << endl;            cout << vec[i]->getLoc() << endl;            cout << vec[i]->getBounty() << endl;            vec.erase(vec.begin() + i);            //sp case            i--;            cout << "删除成功 " << endl;            flag = 1;        }    }    if (flag == 0)    {        cout << "未找到该梁山好汉" << endl;    }}void change(vector& vec, char* name){    int i = 0;    int flag = 0;    for (i = 0; i < vec.size(); i++)    {        if (strcmp(vec[i]->name, name) == 0)        {            cout << "查找成功 " << endl;            cout << vec[i]->getName() << endl;            cout << vec[i]->getAge() << endl;            cout << vec[i]->getLoc() << endl;            cout << vec[i]->getBounty() << endl;            cout << "请输入需要修改变量的值:" << endl;            cout << "1.梁山好汉姓名  2.年龄 3.籍贯 4.赏金" << endl;            int choice;            while (1)            {                cin >> choice;                if (choice > 4 || choice < 0) continue;                else break;            }            cout << "输入修改后的值" << endl;            switch (choice)            {            case 1:            {                while (1)                {                    cout << "输入梁山好汉姓名: " << endl;                    char n[Num] = { 0 };                    cin >> n;                    if (vec[i]->setName(n) == TRUE) break;                }                break;            }            case 2:            {                while (1)                {                    cout << "输入年龄: " << endl;                    int a;                    cin >> a;                    if (vec[i]->setAge(a) == TRUE) break;                }                break;            }            case 3:            {                while (1)                {                    cout << "输入梁山好汉籍贯: " << endl;                    char l[Num] = { 0 };                    cin >> l;                    if (vec[i]->setLoc(l) == TRUE) break;                }                break;            }            case 4:            {                while (1)                {                    cout << "输入赏金: " << endl;                    double p;                    cin >> p;                    if (vec[i]->setprice(p) == TRUE) break;                }                break;            }            }            flag = 1;        }    }    if (flag == 0)    {        cout << "未找到该梁山好汉" << endl;    }}void inputFile(vector& vec){    ofstream ofs;    ofs.open(PATH, ios::ate | ios::binary);    int i = 0;    if (vec.size() < 0)    {        cout << "还未录入数据" << endl;        return;    }    for (i = 0; i < vec.size(); i++)    {        ofs << vec[i]->name << "\t" << vec[i]->age << "\t" << vec[i]->loc << "\t" << vec[i]->bounty;        ofs << "\n";    }    cout << "数据录入成功 存储于 ./file.xls中" << endl;    ofs.close();}void outputFile(vector& vec){    ifstream ifs;    ifs.open(PATH, ios::binary | ios::in);    if (ifs.fail()) {        cout << "文件未创建 请先录入数据" << endl;        return;    }    int i = vec.size();    int age;    double price;    char loc[Num] = { 0 };    char name[Num] = { 0 };    //判断是否为文件结尾    while (!ifs.eof())    {        LiangshanHeros* par = new LiangshanHeros;        ifs >> par->name >> par->age >> par->loc >> par->bounty;        vec.push_back(par);    }    cout << "file.xls 文件读入成功  数据已写入" << endl;    ifs.close();}void showAllParam(vector& vec){    int i = 0;    for (i = 0; i < vec.size(); i++)    {        cout << "这是 第" << i + 1 << "位梁山好汉 :" << endl;        cout << "   姓名 :" << vec[i]->name << endl;        cout << "   年龄 :" << vec[i]->age << endl;        cout << "   籍贯 :" << vec[i]->loc << endl;        cout << "   赏金 :" << vec[i]->bounty << endl;        cout << endl;    }}void LiangshanHeros::showMenu(){    HANDLE hout = GetStdHandle(STD_OUTPUT_HANDLE);//句柄    SetConsoleTextAttribute(hout, FOREGROUND_INTENSITY | FOREGROUND_BLUE | FOREGROUND_RED);    printf("\t基于梁山好汉的文件存储系统\n");    SetConsoleTextAttribute(hout, FOREGROUND_INTENSITY | FOREGROUND_RED);    printf("〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓\n");        printf("\t丨 1.添加梁山好汉                \n");    printf("\t丨 2.查找梁山好汉         \n");    printf("\t丨 3.删除梁山好汉         \n");    printf("\t丨 4.修改梁山好汉信息         \n");    printf("\t丨 5.读取已存在信息                 \n");    printf("\t丨 6.保存信息                \n");    printf("\t丨 7.查阅所有信息                 \n");    printf("\t丨 8.退出              \n");    SetConsoleTextAttribute(hout, FOREGROUND_INTENSITY | FOREGROUND_RED);    printf("〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓\n\t");    SetConsoleTextAttribute(hout, FOREGROUND_INTENSITY | FOREGROUND_BLUE);    printf("输入您的选择(1-8):");}int main(){    system("mode con cols=135 lines=30");//控制台 宽度135 高度20    HANDLE hout = GetStdHandle(STD_OUTPUT_HANDLE);//句柄    SetConsoleTextAttribute(hout, FOREGROUND_INTENSITY | FOREGROUND_RED);    LiangshanHeros* par = new LiangshanHeros;    par->showMenu();    vector vec;    char name[Num] = { 0 };    SetConsoleTextAttribute(hout, FOREGROUND_INTENSITY | FOREGROUND_RED);    while (1)    {        int num;        cin >> num;        switch (num)        {        case 1:        {            vec.push_back(set());            cout << "添加成功" << endl;            break;        }        case 2:        {            printf("输入查找的梁山好汉名称:");            cin >> name;            search(vec, name);            break;        }        case 3:        {            printf("输入删除的梁山好汉名称:");            cin >> name;            deletePar(vec, name);            break;        }        case 4:        {            printf("输入查找的梁山好汉名称:");            cin >> name;            change(vec, name);            break;        }        case 5:        {            outputFile(vec);            break;        }        case 6:        {            inputFile(vec);            break;        }        case 7:        {            showAllParam(vec);            break;        }        case 8:        {            cout << "kill process .. " << endl;            exit(0);            break;        }        }        system("pause");        system("cls");        par->showMenu();    }    return 0;}

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