C++课程设计学生学籍管理系统

{ cout<<\找不到你要修改的内容!\

return;

}

(p->next)->output(); (p->next)->input();

school::setkey(1);

}

void school::save() //保存函数

{ student *p; p=head;

ofstream os(\

if (school::getkey()==1)

{

while(p->next)

{ (p->next)->output(os);

p=p->next; }

}

cout<<\文件已保存! \

school::setkey(0);

}

void school::begin()//初始化函数

{ student *p,*p2;

p=head; clear();

long t;

ifstream is(\

if(!is)

{ ofstream os(\

os.close();

return ;

}

int num=-1;

while(1)

{ num=-1; t=is.tellg();

is>>num;

is.seekg(t);

if(num<0)

{ is.close();

return;

}

p2=new student; p2->input(is);

p->next=p2; p2->next=NULL; p=p->next;

}}

void school::clear()//清空函数

{student *p,*p2;

p=head->next;

while( p )

{p2=p; p=p->next;

delete p2;

}}

void school::count()//统计函数

{student *p; p=head;

int n=0;

double g[3]={0,0,0}; float j[3]={0,0,0};

while(p->next)

{ p=p->next;

n++;

for(int i=0;i<3;i++)

{ g[i]=g[i]+( p->getscore(i) );

(p->getscore(i) )>=60.0? j[i]++ : 0 ;

}

}

cout<<\数学总分:\平均分:\