使用字符指针和字符数组的区别 [英] Difference between using character pointers and character arrays

问题描述

基本的问题。

char new_str[]="";

char * newstr;

如果我有一些数据连接成或使用字符串函数类似的strcat / SUBSTR / strcpy的，什么是两者之间的区别？

If I have to concatenate some data into it or use string functions like strcat/substr/strcpy, what's the difference between the two?

我明白我必须分配内存为char *的方法（2号线）。我真的不知道怎么虽然。

I understand I have to allocate memory to the char * approach (Line #2). I'm not really sure how though.

和const char *与字符串文字是一样的吗？

And const char * and string literals are the same?

我需要知道更多关于这个。有人能指出一些不错的内容无遗/材料？

I need to know more on this. Can someone point to some nice exhaustive content/material?

推荐答案

请通过的下面这篇文章：

在字符数组的情况下，也看到像你的情况，焦炭new_str []那么new_str将总是指向数组的基地。本身的指针不能被递增。是的，你可以使用下标来访问下一个字符数组例如： new_str [3] ;

Also see in case of array of char like in your case, char new_str[] then the new_str will always point to the base of the array. The pointer in itself can't be incremented. Yes you can use subscripts to access the next char in array eg: new_str[3];

但在指针的情况下为char，指针可以增加 new_str ++ 来获取你的数组中的一个字符。

But in case of pointer to char, the pointer can be incremented new_str++ to fetch you the next character in the array.

此外，我会建议 >更加清晰。

Also I would suggest this article for more clarity.

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