傅少杰太没实力辣

3 comments

  • @ 2024-5-22 22:19:41

    #include #include #include #define MAX 1000 //定义学生数组最大容量 using namespace std;

    //设计学生信息结构体 struct person { long num;//学号 string name;//姓名 int sex;//性别 int age;//年龄 int math;//数学 int chinese;//语文 int english;//英语 int number;//总分 };

    //学生成绩管理系统 struct personbook { person parry[MAX];//学生数组最大容量 int M_size;//当前容量 };

    //1、菜单界面 void showmenu() { cout << "" << endl; cout << "*****1、 学生成绩录入 *****" << endl; cout << "*****2、 浏览学生成绩 *****" << endl; cout << "*****3、 删除学生成绩 *****" << endl; cout << "*****4、 查找学生信息 *****" << endl; cout << "*****5、 统计学生信息 *****" << endl; cout << "*****6、 学生信息排序 *****" << endl; cout << "*****7、 清空学生信息 *****" << endl; cout << "*****0、 退出管理系统 *****" << endl; cout << "" << endl; cout <<endl; cout << "请输入菜单序号*"<<endl; }

    //添加学生信息 void addperson(personbook * abs) { person parry[MAX];

    ofstream outfile("学生成绩管理系统.dat",ios::app);//创建或打开文件，以输出方式打开文件
if(!outfile)
{
	cerr<<"open error!"<<endl;
	exit(1);
}

//判断学生成绩管理系统是否已经满了
if (abs->M_size == MAX)
{
    cout << "学生成绩管理系统已满，无法添加！" << endl;
    return;
}
else 
{
	//添加学生学号
	//long num;
	cout<<"请输入学号："<<endl;
	cin >> parry[abs->M_size].num;
    abs->parry[abs->M_size].num;
	outfile<<parry[abs->M_size].num<<'\t';
    //添加学生姓名
    //string name;
    cout << "请输入姓名：" << endl;
    cin >> parry[abs->M_size].name;
    abs->parry[abs->M_size].name;
	outfile<<parry[abs->M_size].name<<'\t';
    //性别
    //int sex;
    cout << "请输入性别：" << endl;
    cout << "1--男" << endl;
    cout << "2--女" << endl;
    while (true) 
	{
    cin >> parry[abs->M_size].sex;
    if (parry[abs->M_size].sex == 1 || parry[abs->M_size].sex == 2) 
	{
        abs->parry[abs->M_size].sex;
		outfile<<parry[abs->M_size].sex<<'\t';
        break;
    }
    else
	{
        cout << "无效输入，请重新输入" << endl;
    }
    }
   //输入年龄
    //int age;
    cout << "请输入年龄：" << endl;
    cin >>parry[abs->M_size].age;
    abs->parry[abs->M_size].age;
	outfile<<parry[abs->M_size].age<<'\t';
	//输入数学成绩
	//int math;
	cout<<"请输入数学"<<endl;
	cin>> parry[abs->M_size].math; 
	abs->parry[abs->M_size].math;
	outfile<<parry[abs->M_size].math<<'\t';
    //输入语文成绩
    //int chinese;
    cout << "请输入语文：" << endl;
    cin >> parry[abs->M_size].chinese;
    abs->parry[abs->M_size].chinese;
	outfile<<parry[abs->M_size].chinese<<'\t';
    //输入英语成绩
    //int english;
    cout << "请输入英语：" << endl;
    cin >> parry[abs->M_size].english;
    abs->parry[abs->M_size].english;
	outfile<<parry[abs->M_size].english<<'\t';
	//总分
    //int number;
    /*cout << "请输入英语/：" << endl;*/
    parry[abs->M_size].number=parry[abs->M_size].math + parry[abs->M_size].chinese + parry[abs->M_size].english;
    abs->parry[abs->M_size].number;
	outfile<<parry[abs->M_size].number<<'\n';
    abs->M_size++;
    cout << "添加成功！" << endl;
	
	system("pause");
    system("cls");//清屏
}
outfile.close();//关闭文件

    }

    //显示学生成绩信息 void showperson(personbook * abs) { person parry[MAX];

    ifstream infile("学生成绩管理系统.dat",ios::in||ios::out);//创建或打开文件,以输入方式打开文件
if(!infile)
{  
	cerr<<"open error!"<<endl;
	exit(1);
}
//system("pause");
system("cls");

if (abs->M_size == 0)  //判断学生成绩管理系统中人数是否为0，如果为0，提示记录为空;如果不为0，显示记录的学生信息信息
{
    cout << "还未添加学生信息" << endl;
	system("pause");
    system("cls");
}
else 
{
    for (int i = 0; i < abs->M_size; ++i) 
	{
		infile>>parry[i].num>>parry[i].name>>parry[i].sex>>parry[i].age>>parry[i].math>>parry[i].chinese>>parry[i].english>>parry[i].number;

		cout << "学号：" << parry[i].num << "\t";
        cout << "姓名：" << parry[i].name << "\t";
        cout << "性别：" << (parry[i].sex==1?"男":"女") << "\t";//三步运算符
        cout << "年龄：" << parry[i].age << "\t";
		cout<<  "数学: " << parry[i].math<<"\t";
        cout << "语文：" << parry[i].chinese << "\t";
        cout << "英语：" << parry[i].english << "\t";
		cout << "总分：" << parry[i].number << endl;
    }
}
infile.close();//关闭文件
system("pause");
system("cls");

    }

    //查找学生成绩实现步骤 int isexist(personbook * abs,string name) { person parry[MAX];

    ifstream infile("学生成绩管理系统.dat",ios::in||ios::out);//创建或打开文件,以输入方式打开文件
if(!infile)
{  
	cerr<<"open error!"<<endl;
	exit(1);
}

for (int i=0; i < MAX; ++i)
{
	infile>>abs->parry[i].name;
    if (name == abs-> parry[i].name)
	{
        return i;
    }
}
return -1;//如果没查到就返回-1  
infile.close();//关闭文件

    }

    //删除学生信息 void deleteperson(personbook * abs) {

    cout << "请输入您要删除的学生信息" << endl;
string name;
cin >> name;
int ret = isexist(abs,name);
if (ret == -1) 
{
    cout << "查无此人" << endl;
}
else
{
    for (int i = ret; i < abs->M_size; ++i) 
	{
        abs->parry[i] = abs->parry[i + 1];//数据前移
    }
    abs->M_size--;
    cout << "删除成功" << endl;
}
system("pause");
system("cls");

    }

    //查找学生信息信息 void findperson( personbook * abs) { person parry[MAX];

    ifstream infile("学生成绩管理系统.dat",ios::in||ios::out);//创建或打开文件,以输入方式打开文件
if(!infile)
{  
	cerr<<"open error!"<<endl;
	exit(1);
}
cout << "请输入您要查找的人：" << endl;
string name;
cin >> name;
int ret = isexist(abs,name);
if (ret != -1) 
{
	infile>>abs->parry[ret].num>>abs->parry[ret].name>>abs->parry[ret].sex>>abs->parry[ret].age>>abs->parry[ret].math>>abs->parry[ret].english>>abs->parry[ret].english>>abs->parry[ret].number;

	cout << "学号：" << abs->parry[ret].num << "\t";
    cout << "姓名：" << abs->parry[ret].name << "\t";
    cout << "性别：" << (abs->parry[ret].sex == 1 ? "男" : "女") << "\t";//三步运算符
    cout << "年龄：" << abs->parry[ret].age << "\t";
	cout<<  "数学: " << abs->parry[ret].math<<"\t";
    cout << "语文：" << abs->parry[ret].chinese << "\t";
    cout << "英语：" << abs->parry[ret].english << "\t";
	cout << "总分：" << abs->parry[ret].number << endl;
}
else 
{
    cout << "查无此人" << endl;
}
system("pause");
system("cls");
infile.close();//关闭文件

    }

    //统计某分数段的所有学生数量 void statistics(personbook* abs) { person parry[MAX];

    ifstream infile("学生成绩管理系统.dat",ios::in||ios::out);//创建或打开文件,以输入方式打开文件
if(!infile)
{  
	cerr<<"open error!"<<endl;
	exit(1);
}
cout<<"根据总分进行统计，请输入你要统计的分数段"<<endl;
int num_min;
int num_max;
int x=0;//统计数量
cout<<"请输入最低分数：";
cin>>num_min;
cout<<"请输入最高分数：";
cin>>num_max;
for (int i=0; i < MAX; ++i)
{
	infile>>abs->parry[i].num>>abs->parry[i].name>>abs->parry[i].sex>>abs->parry[i].age>>abs->parry[i].math>>abs->parry[i].chinese>>abs->parry[i].english>>abs->parry[i].number;
    if (num_min < abs->parry[i].number && num_max >= abs->parry[i].number)
	{
		x++;
		cout<<x<<"  ";
		cout << "学号：" << abs->parry[i].num << "\t";
        cout << "姓名：" << abs->parry[i].name << "\t";
	    cout << "性别：" << (abs->parry[i].sex == 1 ? "男" : "女") << "\t";//三步运算符,水平制表
	    cout << "年龄：" << abs->parry[i].age << "\t";
		cout<<  "数学: " <<abs->parry[i].math<<"\t";
		cout << "语文：" << abs->parry[i].chinese << "\t";
		cout << "英语：" << abs->parry[i].english << "\t";
		cout << "总分：" << abs->parry[i].number << endl; 
    }
}
cout<<endl;
cout<<"该分数段共有  "<<x<<"人"<<endl;
system("pause");
system("cls");
infile.close();//关闭文件

    }

    //学生信息排序 //按照总成绩从高到低排序 void sortPerson(personbook * abs) { person parry[MAX]; int zongfeng[MAX]; int num;

    ifstream infile("学生成绩管理系统.dat",ios::in||ios::out);//创建或打开文件,以输入方式打开文件
if(!infile)
{  
	cerr<<"open error!"<<endl;
	exit(1);
}

for (int i=0; i < abs->M_size; ++i)
{
	infile>>abs->parry[i].num>>abs->parry[i].name>>abs->parry[i].sex>>abs->parry[i].age>>abs->parry[i].math>>abs->parry[i].chinese>>abs->parry[i].english>>abs->parry[i].number;

	zongfeng[i]=abs->parry[i].number;
}

//冒泡排序
for(int m=0;m<abs->M_size-1;++m)
	for(int n=0;n<abs->M_size-m;++n)
	{
		if(zongfeng[n]<zongfeng[n+1])
		{
			num = zongfeng[n];
			zongfeng[n] = zongfeng[n+1];
			zongfeng[n+1]=num;
		}
	}
for (int j=0; j < abs->M_size; ++j)
for (int i=0; i < abs->M_size; ++i)
{
	infile>>abs->parry[i].num>>abs->parry[i].name>>abs->parry[i].sex>>abs->parry[i].age>>abs->parry[i].math>>abs->parry[i].chinese>>abs->parry[i].english>>abs->parry[i].number;
	if(zongfeng[j]==abs->parry[i].number)
	{
		cout << "学号：" << abs->parry[i].num << "\t";
		cout << "姓名：" << abs->parry[i].name << "\t";
		cout << "性别：" << (abs->parry[i].sex == 1 ? "男" : "女") << "\t";//三步运算符,水平制表
		cout << "年龄：" << abs->parry[i].age << "\t";
		cout<<  "数学: " <<abs->parry[i].math<<"\t";
		cout << "语文：" << abs->parry[i].chinese << "\t";
		cout << "英语：" << abs->parry[i].english << "\t";
		cout << "总分：" << abs->parry[i].number << endl; 

	}
}
infile.close();//关闭文件
system("pause");
system("cls");

    }

    //清空学生信息 void cleanPerson(personbook * abs) { while(true) { cout << "如果确定清空学生信息" << endl; cout << "1--是" << endl; cout << "2--否" << endl; int flag; cin >> flag; if (flag == 1) { abs->M_size = 0; ofstream outfile("学生成绩管理系统.dat",ios::out);//创建或打开文件，以输出方式打开文件 outfile.close();//关闭文件 cout << "学生信息已清空" << endl; break; } else if(flag == 2) { break; } else { cout << "无效输入，请重新输入" << endl; break; } } system("pause"); system("cls"); }

    //主函数 int main() { personbook abs;//初始化学生成绩管理系统 abs.M_size = 0;

    int select = 0;
while (true)//无限循环
{
	showmenu();
	cin >> select;
	system("cls");
	
	switch (select) 
{
case 1:
    addperson(&abs);
    break;
case 2:
	showperson(&abs);
	break;
case 3:
    deleteperson(&abs);
    break;
case 4:
    findperson(&abs);
    break;
case 5:
	statistics(&abs);
	break;
case 6:
	sortPerson(&abs);
	break;
case 7:
	cleanPerson(&abs);
	break;
case 0:
    cout << "欢迎下次使用" << endl;
    return 0;
    break;
}
}
return 0;

    }

    • @ 2024-5-22 22:11:33

      对呀，人家好像几个月没上线了

      • @ 2024-5-22 21:24:58

        他好像已经退了

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