[問題] C 的字串與記憶體問題
各位好:
請問下面這一段程式有什麼問題嗎
void getMemory(char* p, int num)
{
p = (char*)malloc(sizeof(char)*num);
}
void main()
{
char* str = NULL;
getMemory(str, 100);
strcpy(str, "Hello");
}
執行時會在 strcpy(str, "Hello") 發生錯誤
是因為用 malloc 產生的動態字元陣列不能以 strcpy 分配值嗎?
那正確寫法應該是怎麼樣呢?
謝謝大家
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