C++中的字符數組與字符指針

//【C++基礎】字符數組和字符指針.cpp
//劍指offer上的這段話：
//為了節省內存，c/c++把常量字符串放到單獨的一個內存空間。但是當幾個指針賦值給相同的常量字符串時，它們實際上會指向相同的內存地址
//

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

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

    const char* str3 = "hello world";  //定義：char* str3 = "hello world";  報錯
    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;
}

 

運行結果：