C ++中的字符指针 [英] character pointers in C++

问题描述

Hi Guys
我对c ++中的字符指针有疑问。每当我们在c ++ char * p =你怎么做中创建一个字符指针时，p 应该包含内存位置的地址，它保存着你怎么样的值。 strong>
但是我对一个samle代码和输出感到困惑。为什么 cout<< p 返回整个字符串？它应该给出一个内存地址的值。第二，为什么 cout<< * p 只给出字符串的第一个字符？提前致谢！
代码：

Hi Guys I have a doubt regarding character pointers in c++. Whenever we create a character pointer in c++ char *p="How are you doing", p should contain the address of memory location which holds the value "how are you doing". However I am perplexed at a samle code and the output. Why cout<<p gives back the entire string? It should give value of a memory address. Secondly why does cout<<*p gives only first character of the string? Thanks in advance! Code:

#include <iostream>
using namespace std;

int main () {

const char *str = "how are you\n";
int i[]={1,2,3};


 cout << str << endl;   // << is defined on char *.
 cout << i << endl;
 cout << *str << endl;

}

OUTPUT：

how are you

0xbfac1eb0

h

推荐答案

这是由于操作员重载。

同样，使用* p，你将得到第一个字符，因此，您将获得第一个字符作为输出。

Similarly, with *p, you will get the first character, hence you get the first character as output.

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