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

基本问题。

  char new_str [] =; 
 
 char * newstr; 
  

如果我必须连接一些数据或使用strcat / substr / strcpy等字符串函数，两者之间的区别？

我知道我必须分配内存给char *方法（行＃2）。我不太确定如何。

和const char *和字符串文字是一样的吗？

我需要知道更多。有人能指出一些非常详尽的内容/材料吗？

解决方案

请通过本文：

此外看到如果数组的字符在你的情况下，char new_str []然后new_str将总是指向数组的基数。指针本身不能递增。是的，您可以使用下标访问数组中的下一个字符，例如： new_str [3] ;

的指针指向char，指针可以递增 new_str ++ 以获取数组中的下一个字符。

为了更清楚，我建议本文。 p>

Basic question.

char new_str[]="";

char * newstr;

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

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

And const char * and string literals are the same?

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

解决方案

Please go through this article below:

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];

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

Also I would suggest this article for more clarity.

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