能帮我看看哪错了吗？

Question

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
struct node{
char code[8];
struct node *next;
};
int main(void)
{
char str[8];
int count, i, n, size = sizeof(struct node);
struct node *head, *p;

head = NULL;
gets(str);
/* 按输入数据的逆序建立链表 */
while(strcmp(str, "#") != 0){
    p = (struct node *)malloc(size);
    strcpy(p->code, str);
    head = p->next;
    head = p; 
    gets(str);
}
count = 0;
for(p = head; p->next != NULL; p = p->next) {
    if(p->code[1] == '0' && p->code[2] == '2') {
        count++ ;
    }
}
printf("%d\n", count);

return 0;

}

Answer 1

修改两处，看截图

代码参考如下：

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

struct node{
    char code[8];
    struct node *next;
};
int main(void)
{
    char str[8];
    int count, i, n, size = sizeof(struct node);
    struct node *head, *p;

    head = NULL;
    gets(str);
    /* 按输入数据的逆序建立链表 */
    while(strcmp(str, "#") != 0){
        p = (struct node *)malloc(size);
        strcpy(p->code, str);
        p->next = head;
        head = p; 
        gets(str);
    }

    count = 0;
    for(p = head; p != NULL; p = p->next) {
        if(p->code[1] == '0' && p->code[2] == '2') {
            count++ ;
        }

    }
    printf("%d\n", count);

    return 0;
}

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