c++大作业学生信息管理系统源代码

b=p->total;p->total=q->total;q->total=b;

c=p->average;p->average=q->average;q->average=c;

}

q=q->next;

}

p=p->next;

}

}

//◆8

void xingming(student *head) //按姓名首字母排序功能

{

student *p,*q;

char a[30];

int b;

float c;

p=head;

while (p)

{

q=p->next;

while (q)

{

if (strcmp(p->name,q->name)>0)

{

strcpy(a,p->num);strcpy(p->num,q->num);strcpy(q->num,a);

strcpy(a,p->name);strcpy(p->name,q->name);strcpy(q->name,a);

strcpy(a,p->clas);strcpy(p->clas,q->clas);strcpy(q->clas,a);

b=p->chinese;p->chinese=q->chinese;q->chinese=b;

b=p->maths;p->maths=q->maths;q->maths=b;

b=p->english;p->english=q->english;q->english=b;

b=p->total;p->total=q->total;q->total=b;

}

q=q->next;

}

p=p->next;

}

}

//◆9

void banji(student *head) //按班级的类别排序功能

{ c=p->average;p->average=q->average;q->average=c;