学生成绩平均分的链表

#include<stdio.h>#include<stdlib.h>struct stu *head,*p,*tail;struct stu{ float math,english,c; struct stu *next;};int n,m;struct stu * creat(){ head = NULL; p = tail = (struct stu *)malloc(sizeof(struct stu)); printf("/n请输入数学，英语，c语言的成绩"); scanf("%f%f%f",&p->math,&p->english,&p->c); for(n=1; n<=m-1; n++){ if(n==1) head = p; else tail->next = p; tail = p; p = (struct stu *)malloc(sizeof(struct stu)); printf("/n请输入数学，英语，c语言的成绩"); scanf("%f%f%f",&p->math,&p->english,&p->c);}tail->next = p; /*将最后一次成绩接入链表*/ p->next = NULL; return(head);}void main(){ float zm=0,ze=0,zc=0; printf("请输入学生的总人数:"); scanf("%d",&m); creat(); p=head; do{ zm=zm+p->math; ze=ze+p->english; zc=zc+p->c; p=p->next; printf("%f%f%f",zm,ze,zc);}while(p!=NULL);printf("/n数学平均成绩：%f/n英语平均成绩：%f/nc语言平均成绩：%f/n",zm/m,ze/m,zc/m);system("pause");}