c - 赋值中的类型不兼容，为什么我不能这样做？

Question

我有一个结构体 The_Word，它有一个变量 char word[WORD_LENGTH]

我有以下内容

typedef struct The_Word
{
    char word[WORD_LENGTH];
    int frequency;
    struct The_Word* next;
} The_Word;

int someFunc(char* word)
{
/*Rest of method excluded*/

struct The_Word *newWord = malloc(sizeof(struct The_Word));

newWord->word = word; // error here. How can I assign the struct's word to the pointer word
}

Answer 1

您需要使用strncpy复制字符串:

#include <string.h>

int someFunc(char* word)
{
  /*Rest of method excluded*/

  struct The_Word *newWord = malloc(sizeof(struct The_Word));
  strncpy(newWord->word, word, WORD_LENGTH);
  newWord->word[WORD_LENGTH - 1] = '\0';
}

您应该小心检查字符串是否适合数组。就是这样，当参数 char* word 的长度大于 WORD_LENGTH 时。