View Code of Problem 83

#include <stdio.h>
#include <malloc.h>
typedef struct node{
	int id;
	int grade;
	struct node *next;
}NODE;
NODE *creat(int n){
	node *head,*p,*q;
	head = (struct node*)malloc(sizeof(struct node));
	head->next = NULL;
	while(n>0){
		p = (struct node*)malloc(sizeof(struct node));
		scanf("%d%d",&p->id,&p->grade);
		if(head->next == NULL){
			p->next = head->next;
			head->next = p;
			q = p;
		}
		else{
			p->next = q->next;
			q->next = p;
			q = p;
		}
		n--;
	}
	return head;
}
NODE *merge(NODE *head,NODE *head1){
	NODE *p;
	p = head;
	while(p->next!=NULL)
		p = p->next;
	p->next = head1->next;
	head1->next = NULL;
	return head;
}
int sort(NODE *head,int n){
	NODE *p;
	int id,grade;
	while(n>0){
		for(p = head->next;p->next!=NULL;p=p->next){
			if(p->grade > p->next->grade){
				grade = p->grade;
				id=p->id;
				p->grade = p->next->grade;
				p->id = p->next->id;
				p->next->grade = grade;
				p->next->id = id;
			}
		}
		n--;
	}
	p = head->next;
	while(p!=NULL){
		printf("%d %d\n",p->id,p->grade);
		p = p->next;
	}
	return 0;
}
main(){
	NODE *head,*head1;
	int n,m;
	scanf("%d%d",&n,&m);
	head = creat(n);
	head1 = creat(m);
	head = merge(head,head1);
	sort(head,n+m);
	return 0;
}
/*
Main.c: In function 'creat':
Main.c:9:2: error: unknown type name 'node'
  node *head,*p,*q;
  ^
Main.c:10:7: warning: assignment from incompatible pointer type
  head = (struct node*)malloc(sizeof(struct node));
       ^
Main.c:11:6: error: request for member 'next' in something not a structure or union
  head->next = NULL;
      ^
Main.c:13:5: warning: assignment from incompatible pointer type
   p = (struct node*)malloc(sizeof(struct node));
     ^
Main.c:14:18: error: request for member 'id' in something not a structure or union
   scanf("%d%d",&p->id,&p->grade);
                  ^
Main.c:14:25: error: request for member 'grade' in something not a structure or union
   scanf("%d%d",&p->id,&p->grade);
                         ^
Main.c:15:10: error: request for member 'next' in something not a structure or union
   if(head->next == NULL){
          ^
Main.c:16:5: error: request for member 'next' in something not a structure or union
    p->next = head->next;
     ^
Main.c:16:18: error: request for member 'next' in something not a structure or union
    p->next = head->next;
                  ^
Main.c:17:8: error: request for member 'next' in something not a structure or union
    head->next = p;
        ^
Main.c:21:5: error: request for member 'next' in something not a structure or union
    p->next = q->next;
     ^
Main.c:21:15: error: request for member 'next' in something not a structure or union
    p->next = q->next;
               ^
Main.c:22:5: error: request for member 'next' in something not a structure or union
    q->next = p;
     ^
Main.c:27:2: warning: return from incompatible pointer type
  return head;
  ^
Main.c: At top level:
Main.c:61:1: warning: return type defaults to 'int'
 main(){
 ^
*/