C Language 单链表篇 -

Posted 2021-11-07 Adorable_Rocy

单链表应用中，用户手动输入一串字符，查找字符’x’出现的索引

• 创建指针结构体

struct link {
	char ch;
	struct link *next;
};

• 创建用户输入算法

struct link *create() {
	char ch;
	struct link *next , *R , *L = NULL;
	printf("printf char in this scope:\\n");
	while((ch = getchar()) != '\\n') {
		next = (struct link *)malloc(sizeof(struct link));
		next -> ch = ch;

		if(L == NULL) {
			L = R = next;
		} else {
			R -> next = next;
			R = next;
		}
		
	}
	R -> next = NULL;

	return L;
};

• 提供一个搜索算法，用来搜索用户输入的内容.

void search(struct link *L) {
	struct link *h;
	int index = 1;
	h = L;
	while(h!=NULL) {
		if(h->ch == 'x') {
			printf("X的位置为：%d\\n",index);
		}
		index++;
		h = h->next;
	}
}