将 char* 分配给字符串变量后删除

I have executed the below code and it works perfectly. Since it is about pointers, I just want to be sure. Though I'm sure that assigning char* to string makes a copy and even if I delete char*, string var is gonna keep the value.

    #include <stdio.h>
    #include <string.h>
    #include <string>
    #include <iostream>

    int main()
    {
        std::string testStr = "whats up ...";
        int strlen = testStr.length();
        char* newCharP = new char[strlen+1];
        memset(newCharP,'',strlen+1);
        memcpy(newCharP,testStr.c_str(),strlen);


        std::cout << "  :11111111   :   " << newCharP << "
";
        std::string newStr = newCharP ;

        std::cout << "  2222222 : " << newStr << "
";
        delete[] newCharP;
        newCharP = NULL;

        std::cout << "  3333333 : " << newStr << "
";
    }

我只是在我的公司项目中更改了一些代码，并且 char* 在 C++ 中的函数之间传递.char* 指针已复制到字符串，但 char* 在函数末尾被删除.我找不到任何具体的原因.所以我只是删除 char*，只要它被复制到一个字符串中.这会有什么问题吗...?