Here is my c++ Code's main function.
int main() {
vector<string> a;
any x;
x="Hello";
a.insert(a.begin(),any_cast<string>(x));
cout<<a[0]<<endl;
}
and this is giving me an error like this:
terminate called after throwing an instance of 'std::bad_any_cast'
what(): bad any_cast
Aborted (core dumped)
The problem is, "Hello" is of type const char[6] and would decay to const char*, it's not std::string. That's why you got std::bad_any_cast when trying to get std::string from the std::any.
You can change to get const char* like
a.insert(a.begin(),any_cast<const char*>(x));
Or assign std::string to the std::any from the beginning.
x=std::string("Hello");
Or use literals (since C++14)
x="Hello"s;