C++顺序表简单实现学生信息管理系统，未加入文件输入输出流，界面较简单，编译通过

#include<stdlib.h>
#include<string>
#include<iostream>
#include<iomanip>
using namespace std;

#define MAXSIZE 100
#define OVERFLOW -2
#define ERROR -1
#define OK 1

typedef int Status;

typedef struct {
    string Name;  // 姓名
    string Num;  // 学号
    string Sex;  // 性别
    int Age;  // 年龄
    string Tele;  // 电话
    string Addr;  // 地址
    float Score;  //3 成绩
}StudentList;

typedef StudentList Elemtype;

typedef struct {
    Elemtype* elem;  
    int length;  // 顺序表长度
}SqList;

// 重载输入运算符
istream& operator >>(istream& in, Elemtype& Stu)
{
    cout << "姓名：";
    in >> Stu.Name;
    cout << "学号：";
    in >> Stu.Num;
    cout << "性别：";
    in >> Stu.Sex;
    cout << "年龄：";
    in >> Stu.Age;
    cout << "电话：";
    in >> Stu.Tele;
    cout << "地址：";
    in >> Stu.Addr;
    cout << "成绩：";
    in >> Stu.Score;
    return in;
}

// 重载输出运算符
ostream& operator <<(ostream& out, Elemtype& Stu)
{
    out << Stu.Name << Stu.Num << Stu.Sex << Stu.Age << Stu.Tele << Stu.Addr << Stu.Score << endl;
    return out;
}


// 初始化顺序表
Status InitList_Sq(SqList& L)
{
    L.elem = new Elemtype[MAXSIZE];
    if (!L.elem) exit(OVERFLOW);
    L.length = 0;
    cout << "初始化成功！" << endl;
    return OK;
}

// 销毁顺序表
void DestroyList(SqList& L)
{
    if (!L.elem)
        delete[] L.elem;
    cout << "销毁成功！" << endl;
}

// 清空顺序表
void ClearList(SqList& L)
{
    L.length = 0;
    cout << "清空成功！" << endl;
}

// 返回顺序表的长度
void GetLength(SqList L)
{
    cout << "顺序表的长度为：" << L.length << endl;
}

// 判断顺序表是否为空
int IsEmpty(SqList L)
{
    if (!L.elem) {
        cout << "顺序表为空！" << endl;
        return 1;
    }
    else {
        cout << "顺序表非空！" << endl;
        return 0;
    }
}

// 创建顺序表
Status CreateList(SqList& L, int length)
{ 
       // cout << "请输入顺序表的元素：";
    int i;
    if (length < 0) return ERROR;
    if (length >= MAXSIZE) return OVERFLOW;
    for (i = 1; i < length + 1; i++)
    {
        cout << "请输入第" << i << "个学生的信息：" << endl;
        cin >> L.elem[i - 1];
    }
    L.length = length;
    cout << "创建成功！" << endl;
    return OK;
}

// 输出顺序表
void PrintList(SqList L)
{
    int i;
    cout << setw(10) << "姓名" << setw(10) << "学号" << setw(10) << "性别" <<setw(10) 
        << "年龄" << setw(15) << "电话" << setw(28) << "地址" << setw(15) << "成绩" << endl;
    for (i = 0; i < L.length; i++)
        cout << setw(10) << L.elem[i].Name << setw(10) <<L.elem[i].Num
        << setw(10) << L.elem[i].Sex << setw(10) << L.elem[i].Age 
        << setw(15) << L.elem[i].Tele << setw(28) << L.elem[i].Addr << setw(15) << L.elem[i].Score << endl;
    cout << endl;
}

// 按学号排序
void SequenceList(SqList& L)
{
    Elemtype Temp;
    // 冒泡排序
    for (int i = 0; i < L.length - 1; i++)
    {
        for (int j = 0; j < L.length - 1; j++)
            if (L.elem[j].Num > L.elem[j + 1].Num)
            {
                Temp = L.elem[j];
                L.elem[j] = L.elem[j + 1];
                L.elem[j + 1] = Temp;
            }
    }
    cout << "排序成功！" << endl;
}

// 删除顺序表中的某个元素，并将其保存在e中
Status DeleteList(SqList& L, Elemtype& e)
{
    int i;
    cout << "要删除元素的位置：";
    cin >> i;
    if (i < 1 || i > L.length) return ERROR;
    e = L.elem[i - 1];
    int j;
    for (j = i; j < L.length; j++)
        L.elem[j - 1] = L.elem[j];
    L.length--;
    cout << "删除成功！" << endl;
    return OK;
}

// 在顺序表中插入元素
Status InsertList(SqList& L)
{
    if (L.length == MAXSIZE) {
        cout << "溢出！" << endl;
        return OVERFLOW;
    }
    int i;
    Elemtype e;
    cout << "请输入您要插入的位置：";
    cin >> i;
    if (i < 1 || i > L.length + 1) {
        cout << "输入错误！" << endl;
        return ERROR;
    }
    cout << "请输入学生信息：" << endl;
    cout << "姓名：";
    cin >> e.Name;
    cout << "学号：";
    cin >> e.Num;
    cout << "性别：";
    cin >> e.Sex;
    cout << "年龄：";
    cin >> e.Age;
    cout << "电话：";
    cin >> e.Tele;
    cout << "地址：";
    cin >> e.Addr;
    cout << "成绩：";
    cin >> e.Score;
    Elemtype* p, * q;
    q = &(L.elem[i - 1]);
    for (p = &(L.elem[L.length - 1]); p >= q; p--)
        * (p + 1) = *p;
    *q = e;
    ++L.length;
    cout << "插入成功！" << endl;
    return OK;
}

// 修改顺序表元素
void ChangeList(SqList& L)
{
    string num;
    int i;
    cout << "请输入要修改的学生的学号：";
    cin >> num;
    for (i = 0; i < L.length; i++)
    {
        if (L.elem[i].Num == num)
        {
            cout << "姓名：";
            cin >> L.elem[i].Name;
            cout << "学号：";
            cin >> L.elem[i].Num;
            cout << "性别：";
            cin >> L.elem[i].Sex;
            cout << "年龄：";
            cin >> L.elem[i].Age;
            cout << "电话：";
            cin >> L.elem[i].Tele;
            cout << "地址：";
            cin >> L.elem[i].Addr;
            cout << "成绩：";
            cin >> L.elem[i].Score;
            cout << "修改成功！" << endl;
        }
    }
    if (i == L.length)
        cout << "查无此人！" << endl;
}


// 按学号查找
void SearchList_Num(SqList& L)
{
    string Num;
    int i;
    cout << "请输入要查找的学生的学号：";
    cin >> Num;
    for (i = 0; i < L.length; i++)
    {
        if (L.elem[i].Num == Num)
        {
            cout << setw(10) << "姓名" << setw(10) << "学号" << setw(10) << "性别" << setw(10)
                << "年龄" << setw(15) << "电话" << setw(28) << "地址" << setw(15) << "成绩" <<  endl;
            cout << setw(10) << L.elem[i].Name << setw(10) << L.elem[i].Num << setw(10)
                << L.elem[i].Sex << setw(10) << L.elem[i].Age << setw(15)
                << L.elem[i].Tele << setw(28) << L.elem[i].Addr << setw(15) << L.elem[i].Score << endl;
            break;
        }
    }
    if(i == L.length)
        cout << "查无此人！" << endl;
}

// 按姓名查找
void SearchList_Name(SqList& L)
{
    string Name;
    int i;
    cout << "请输入要查找的学生的姓名：";
    cin >> Name;
    for (i = 0; i < L.length; i++)
    {
        if (L.elem[i].Name == Name)
        {
            cout << setw(10) << "姓名" << setw(10) << "学号" << setw(10) << "性别" << setw(10)
                << "年龄" << setw(15) << "电话" << setw(28) << "地址" << setw(15) << "成绩" << endl;
            cout << setw(10) << L.elem[i].Name << setw(10) << L.elem[i].Num << setw(10)
                << L.elem[i].Sex << setw(10) << L.elem[i].Age << setw(15)
                << L.elem[i].Tele << setw(28) << L.elem[i].Addr << setw(15) << L.elem[i].Score << endl;
            break;
        }
    }
    if(i == L.length)
        cout << "查无此人！" << endl;
}

// 按电话查找
void SearchList_Tele(SqList& L)
{
    string Tele;
    int i;
    cout << "请输入要查找的学生的电话：";
    cin >> Tele;
    for (i = 0; i < L.length; i++)
    {
        if (L.elem[i].Tele == Tele)
        {
            cout << setw(10) << "姓名" << setw(10) << "学号" << setw(10) << "性别" << setw(10)
                << "年龄" << setw(15) << "电话" << setw(28) << "地址" << setw(10) << "成绩" << endl;
            cout << setw(10) << L.elem[i].Name << setw(10) << L.elem[i].Num << setw(10)
                << L.elem[i].Sex << setw(10) << L.elem[i].Age << setw(15)
                << L.elem[i].Tele << setw(28) << L.elem[i].Addr << setw(10) << L.elem[i].Score << endl;
            break;
        }
    }
    if(i == L.length)
        cout << "查无此人！" << endl;
}

int main()
{
    SqList L;
    int p = 0, i = 0;
    // int n, i;
    int Length;
    Elemtype e;    
    cout << "请输入顺序表的长度：";
    cin >> Length;
    /*  
    // test
    // InitList_Sq(L);
    // cout << "请输入顺序表的长度：";
    // cin >> length;
    // CreateList(L, Length);

    // 输出测试
    // PrintList(L);

    // 排序测试
    // SequenceList(L);
    // PrintList(L);

    // 删除测试
    // cin >> i;
    // DeleteList(L, e);
    // cout << e.Name << e.Num << e.Sex << e.Age << e.Tele << e.Addr << e.Score << endl;
    // PrintList(L);

    // 插入测试
    // InsertList(L);
    // PrintList(L);
    // cout << "顺序表的长度为：" << GetLength(L) << endl;
    
    // 修改测试
    // ChangeList(L);
    // PrintList(L);

    // 按学号查找测试
    // SearchList_Num(L);

    // 按姓名查找测试
    // SearchList_Name(L);

    // 按电话查找
    // SearchList_Tele(L);
    */

    system("cls");
    while (1)
    {
        cout << endl << "1. 初始化顺序表" << endl;
        cout << "2. 创建顺序表" << endl;
        cout << "3. 输出顺序表元素" << endl;
        cout << "4. 顺序表元素排序" << endl;
        cout << "5. 向顺序表中插入元素" << endl;
        cout << "6. 删除顺序表元素" << endl;
        cout << "7. 修改顺序表元素" << endl;
        cout << "8. 按学号查找顺序表元素" << endl;
        cout << "9. 按姓名查找顺序表元素" << endl;
        cout << "10. 按电话查找顺序表元素" << endl;
        cout << "11. 清空顺序表" << endl;
        cout << "12. 销毁顺序表" << endl;
        cout << "0. 退出" << endl;
        cout << endl << "请输入您的选择：";
        cin >> p;
        system("cls");
        switch (p)
        {
        case 0: exit(-2);
        case 1: InitList_Sq(L); break;    
        case 2: CreateList(L, Length);break;
        case 3: PrintList(L); break; 
        case 4: SequenceList(L); break;
        case 5: InsertList(L); break;
        case 6: DeleteList(L, e); break;
        case 7: ChangeList(L); break;
        case 8: SearchList_Num(L); break;
        case 9: SearchList_Name(L); break;
        case 10: SearchList_Tele(L); break;
        case 11: ClearList(L); break;
        case 12: DestroyList(L); break;
        default: cout << "输入错误！" << endl;
        }
        cout << endl << "输入1返回主界面 \n输入0退出" << endl;
        cin >> i;
        switch (i)
        {
        case 1: system("cls"); break;
        case 0: exit(-2); break;
        }
    }
    cout << endl;
    return 0;
}