c语言链表中字符串成员的输入和存储

#include<stdio.h> 
#include<math.h> 
#include<string.h> 

struct student{ 
    char a[16]; 
    char b[2]; 
    char c[2]; 
    struct student *next; 
}*p,*head,*end,*h;

struct num{ 
    char d[2]; 
    struct num *next; 
}*p2,*head2,*end2,*h2;

int main(){ 
    int N,n,i; 
    scanf("%d",&N); 
    head=(struct student*)malloc(sizeof(struct student)); 
    end=head; 

    for(i=0;i<N;i++){ 
        p=(struct student*)malloc(sizeof(struct student)); 
        scanf("%15s",p->a); 
        scanf("%1s",p->b); 
        scanf("%1s",p->c); 
        p->a[15] = '\0';  // 添加空字符终止符
        p->b[1] = '\0';   // 添加空字符终止符
        p->c[1] = '\0';   // 添加空字符终止符
        end->next=p; 
        end=p; 
    } 

    end->next=NULL; 
    scanf("%d",&n); 
    head2=(struct num*)malloc(sizeof(struct num)); 
    end2=head2; 

    for(i=0;i<n;i++){ 
        p2=(struct num*)malloc(sizeof(struct num)); 
        scanf("%1s",p2->d); 
        p2->d[1] = '\0';  // 添加空字符终止符
        end2->next=p2; 
        end2=p2; 
    } 

    end2->next=NULL; 
    h2=head2; 

    while(h2->next!=NULL){ 
        h2=h2->next; 
        h=head; 

        while(h->next!=NULL){ 
            h=h->next; 
            if(strcmp(h2->d,h->b)==0){ 
                printf("%s %s\n",h->a,h->c); 
                break; 
            } 
        } 
    } 

    return 0;
}