错误:“struct”之前应有表达式,在生成链表时

malloc() 一个新节点。我已经考虑过类似的问题,并试图修复我的代码,但我无法让它工作。任何帮助都将不胜感激。

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

struct List {
    int x;
    struct List *next;
};

int main() {
    struct List* head = (struct List*)malloc(sizof(struct List));
    if (head == NULL) {
        return 1;
    }

    head->x = 1;
    head->next = (struct List*)malloc(sizof(struct List));
    head->next->x = 2;
    head->next->next = NULL;

    struct List* current = head;
    while(current != NULL) {
        printf("%d", current->x);
        current = current->next;
    }
    return 0;
}