输入链表输出有序链表

#include<stdio.h>
#include<stdlib.h>
#include"student.cpp"
#define NULL 0
void sort(struct student* head,struct student *s);
int main(){
    struct student h,*head,*p;
    head = &h;h.next=NULL;
    float i =1;
    while(true){
        printf("请输入学生成绩啦(0表示结束)\n");
        scanf("%f",&i);
        if(i==0) break;
        struct student * s = (struct student*)malloc(sizeof(struct student));
        s->score = i;
        sort(head,s);
    }
    p= head->next;
    do{   
        printf("%5.1f\n",p->score);
        p=p->next;
    }while(p!= NULL);   
    return NULL;
}

void sort(struct student* head,struct student *s){
    struct student  *p,*temp;
    temp=head;
    for(p=head;p!=NULL;p=p->next)
        if(p->score > s->score)
            temp=p;   
    s->next = temp->next;
    temp->next=s;
}

#include<stdio.h>
struct student{
    long    num ;
    float    score;
    struct student *next;
};