struct test{

    int i;

    char *p;

};

 struct test *str;

    int a = ;

    char *b = "ioiodddddddddddd";

    str = (struct test *)malloc(sizeof(struct test));//结构体指针不为null

    str->i = a;

    str->p = b;

    printf("%s\n",str->p);  //输出ioiodddddddddddd

return ;

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－

struct test{
    int i;
    char s[10];
};

struct test *str;
str = (struct test *)malloc(sizeof(struct test));//结构体指针不为null
printf("%x\n",str);         //输出 72403170
printf("%x\n",str->s);      //输出 72403174
return 1;