代码如下

#include<iostream>
using namespace std;void f(char **s) {*s = "chenyu";
}typedef struct _node {int val;struct _node *next;
} Node;typedef struct _link {Node *front;Node *rear;
} Link;void queue(Link *link) {
//	link.front = link.rear = NULL; //这个地方不是.而是-> 请注意link->front = link->rear = NULL;
}int main() {cout<<1<<endl;char *s;char **a;a = (char **)malloc(sizeof(char **));*a = "chenyu";f(&s);cout<<s<<endl;cout<<*s<<endl;cout<<*a<<endl;char *b = {"hello"};printf("%p\n",b);printf("%s\n",b);cout<<*b<<endl;Link *link;// link = (Link *)malloc(sizeof(Link *));queue(link);return 0;
}

编译没错

然后运行就出问题了

然后加上

 link = (Link *)malloc(sizeof(Link *));

就可以了