遇到std::bad_alloc异常，现在还不理解到底是为什么出错，要怎么处理，请高人指点了
Classone.txt文件内容
张一 20 165 50 1 85 87 90 69 96 87 90 88 64
张二 21 160 37 2 56 87 94 60 78 80 64 77 66
张三 22 159 55 3 86 69 77 66 83 65 75 45 80
张四 20 158 53 4 75 66 90 56 63 78 66 80 93
张五 22 175 60 5 90 85 80 96 74 68 67 87 91
张六 22 177 50 6 100 60 68 87 93 94 63 76 94
张七 21 185 95 7 65 71 84 70 68 77 82 65 69
张八 20 174 80 9 82 76 69 78 88 92 68 79 77
张九 20 177 58 9 85 87 90 86 95 86 90 89 93
张十 20 164 82 10 87 71 73 78 84 90 65 68 92
实现功能：
在void CTeacher::ReadInfo()函数中实现
从Classone.txt文件中读取学生信息，分别赋值CStudent classone[10]中的各个量。分别计算各个学生的平均成绩，并对学生的成绩进行排序（平均成绩高的为第一名），将排名的结果写入名为Sort.txt的文件（写入的内容必须包括学生的各个信息）。
应该是在冒泡排序那几句遇到std::bad_alloc异常，但找不到解决方法
#include<fstream>
#include<iostream>
#include<string>
using namespace std;
class CPerson
{
protected:
string name;
int age;
int height;
int weight;
public:
CPerson();
void ShowInfo();
void Measure();
};
CPerson::CPerson() {
height = 180;
weight = 90;
age = 40;
name = "李四";
}
void CPerson::ShowInfo() {
cout << "name:" << name;
cout << "age:" << age;
cout << "height:" << height;
cout << "weight:" << weight << endl;
}
void CPerson::Measure() {
float sta;
sta = height - 105;
if (weight < sta * 0.6)
cout << "严重营养不良" << endl;
else if (weight >= sta * 0.6 && weight < sta * 0.8)
cout << "中度营养不良" << endl;
else if (weight >= sta * 0.8 && weight < sta * 0.9)
cout << "轻度营养不良" << endl;
else if (weight >= sta * 0.9 && weight < sta * 1.1)
cout << "正常范围" << endl;
else if (weight > sta * 1.1)
cout << "肥胖" << endl;
}
//class CStudent;
class CTeacher;
class CStudent :public CPerson {
protected:
int num;
int math;
int chi;
int geogra;
int biolo;
int chemis;
int histo;
int politi;
int physi;
float aver;
public:
friend CTeacher;
void ShowInfo();
CStudent();
float operator()();
//friend void CTeacher::SetScore(CStudent& p);
//friend void CTeacher::ReadInfo();
};
class CTeacher :public CPerson {
protected:
CStudent classone[10];
public:
CTeacher();
//void SetScore(CStudent& p);
void ReadInfo();
};
//void CTeacher::SetScore(CStudent& p) {
// cin>>p.math>>p.chi>>p.geogra>>p.biolo>>p.chemis>>p.histo>>p.politi>>p.physi;
//}
CTeacher::CTeacher(): classone() {
height = 175;
age = 52;
name = "张老师";
weight = 65;
}
CStudent::CStudent() {
height = 0;
weight = 0;
age = 0;
name = "0";
num = 0;
math = 0;
chi = 0;
geogra = 0;
biolo = 0;
chemis = 0;
histo = 0;
politi = 0;
physi = 0;
}
void CStudent::ShowInfo() {
CPerson::ShowInfo();
cout << "num:" << num;
cout << "math_score:" << math;
cout << "chinese_score:" << chi;
cout << "geogtaphy_score:" << geogra;
cout << "biology_score:" << biolo;
cout << "chemistry_score:" << chemis;
cout << "history_score:" << histo;
cout << "politics_score:" << politi;
cout << "physics_score" << physi;
}
float CStudent::operator()() {
float aver;
aver = (math + chi + geogra + biolo + chemis + histo + politi + physi) / 8.0;
return aver;
}
void CTeacher::ReadInfo()
{
fstream file;
file.open("Classone.txt", ios::in | ios::binary);
if (!file.is_open()) {
cerr << "error open" << endl;
exit(1);
}
for (int i = 0; i < 10; i++)
file.read((char*)&classone[i], sizeof(classone[i]));
file.close();
for (int i = 0; i < 10; i++)
((classone + i))->aver = (*(classone + i))();
int j = 0;
CStudent* t = new CStudent;
for (int i = 0; i < 9; i++)
for (j = 0; j < 9 - i; j++)
if (classone[j].aver < classone[j+1].aver) {
*t = classone[j];
classone[j] = classone[j+1];
classone[j+1] = *t;
}
fstream file2;
file2.open("Sort.txt", ios::out);
for (int i = 0; i < 10; i++) {
((classone + i))->ShowInfo();
file << "num:" << (classone + i)->num;
file << "math_score:" << (classone + i)->math;
file << "chinese_score:" << (classone + i)->chi;
file << "geogtaphy_score:" << (classone + i)->geogra;
file << "biology_score:" << (classone + i)->biolo;
file << "chemistry_score:" << (classone + i)->chemis;
file << "history_score:" << (classone + i)->histo;
file << "politics_score:" << (classone + i)->politi;
file << "physics_score" << (classone + i)->physi;
}
file2.close();
}
int main() {
//CPerson LiSi;
//LiSi.Measure();
//CStudent Xiaoming;
CTeacher zhang;
//zhang.ShowInfo();
//zhang.Measure();
//zhang.SetScore(Xiaoming);
//cout <<Xiaoming()<< endl;
zhang.ReadInfo();
return 0;
}
