What is a dangling pointer- What is a dangling pointer?

problem ：

I know this is pretty common question, but still new for me! I know this is a very common problem , But it's still a new problem for me ！

I don't understand concept of dangling pointer, was googling around, and writing test methods to find one. I don't understand the concept of dangling pointer , Google searching , And write a test method to find one .

I just wonder is this a dangling pointer? I just want to know if this is a dangling pointer ？As whatever example I found was returning something, here I'm trying something similar! Whatever example I find is returning something , Here I am trying something similar ！

Thanks! thank you ！

void foo(const std::string name){    // will it be Dangling pointer?!, with comments/Answer    // it could be if in new_foo, I store name into Global.    // Why?! And what is safe then?    new_foo(name.c_str());}void new_foo(const char* name){    // print name or do something with name...   }

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Solution ：

Reference resources ： https://stackoom.com/en/question/1DVts