Pointers and Strings

最新推荐文章于 2020-03-29 17:21:39 发布

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最新推荐文章于 2020-03-29 17:21:39 发布

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原文链接：http://www.cnblogs.com/hongjiumu/p/3310524.html

本文探讨了C语言中数组名作为首元素地址的概念，并详细解释了如何利用这一特性处理C风格的字符串。通过实例说明了数组名可以视为指向数组首元素的指针，进而应用于字符串的输出。

The special relationship between arrays and pointers extends to C-style strings.Consider the following code:
char flower[10]="rose";
cout<<flower<<"s are red\n";
The name of an array is the address of ite first element,so flower in the cout statement is the address of the char element containing the character r.

The cout object assumes that the address of a char is the address of a string,so it prints the character at that address and then continues printing characters until it runs into the null character(\0).

In short,if you give cout the address of a character,it prints everything from that character to the first null character that follows it.

The crucial element here is not that flower is an array name but that flower acts as the address of a char.This implies that you can use a pointer-to-char variable as an argument to cout,also,because it,too,is the address of a char.Of course,that pointer should point to the beginning of a string.

转载于:https://www.cnblogs.com/hongjiumu/p/3310524.html