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  自我简介:

#include <stdio.h>

#include <stdlib.h>

#include <string.h>


struct student{

int num;

int score;

struct student *next;

};


struct student *creat(int n){

struct student *head,*tail,*p;

int i;

head=(struct student*)malloc(n*sizeof(struct student*));

tail=head;

for(i=0;i<n;i++){

p=(struct student*)malloc(n*sizeof(struct student*));

scanf("%d %d",&p->num,&p->score);

tail->next=p;

tail=p;

}

tail->next=NULL;

return head;

}


struct student *DeleteCommon(struct student *a,struct student *b){

struct student *p1,*p2,*prep;

int judge;

for(prep=a,p1=a->next;p1 != NULL;p1=p1->next){

judge=1;

for(p2=b->next;p2 != NULL;p2=p2->next){

if(p1->num == p2->num){

prep->next=p1->next;//删除节点 

judge=0;

break;

}

}

if(judge) prep=prep->next;

}

return a;

}


int print(struct student *a){

struct student *p=a;

while(p->next != NULL){

p=p->next;

printf("%d %d\n",p->num,p->score);

}

return 0;

}


int main()

{

struct student *a,*b,*p;

int n,m;

scanf("%d %d",&n,&m);

a=creat(n);

b=creat(m);

DeleteCommon(a,b);

int i=0;

for(p=a;p->next != NULL;p=p->next){

i++;

}

printf("%d\n",i);

print(a);

return 0;

}


 

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