C++中的字符数组与字符指针

//【C++基础】字符数组和字符指针.cpp
//剑指offer上的这段话：
//为了节省内存，c/c++把常量字符串放到单独的一个内存空间。但是当几个指针赋值给相同的常量字符串时，它们实际上会指向相同的内存地址
//

#include "stdafx.h"
#include<iostream>
using namespace std;

int main()
{
    char str1[] = "hello world";
    char str2[] = "hello world";

    const char* str3 = "hello world";  //定义：char* str3 = "hello world";  报错
    const char* str4 = "hello world";

    if (str1 == str2)
        cout << "str1 and str2 are same" << endl;
    else
        cout << "str1 and str2 are not same" << endl;

    if (str3 == str4)
        cout << "str3 and str4 are same" << endl;
    else
        cout << "str3 and str4 are not same" << endl;
    return 0;
}

 

运行结果：