可以这样初始化结构吗？

Question

Below is my code, I define a struct containing int and string variables. I remembered that In c/c++, struct can be initialized like this A a={0} , And I do this below, However, When I print out its string member b. program crashed with terminate called after throwing an instance of 'std::logic_error' what(): basic_string::_M_construct null not valid . But if I changed string b to int b,It does not crash any more. Does anyone know the reason??

struct example
{
    int a;
    string b;
};

int main()
{
    example q={0};
    cout<<q.b<<endl;
}

Answer 1

Your code is working fine, check the execution here . Your, output will be empty as, strings in c++ is by default empty ie by default size of strings in c++ is 0. So, no output.