write object to file c++

Question

friend , i have a problem with my code when try to write the content of object to the file i use code block 17 .

#include <iostream>
#include<string>

#include <fstream>




using namespace std;

class human{


public:
string name;

string country;



human(string a,string l )
{
   name=a;
   country=l;


}



};

// Driver Code
int main()
{


   human a("Ronaldo","Portugal");

    ofstream file;

    
    file.open("last.txt");

    file.write((char*)&a,sizeof(a));

    return 0;
}

the output like this in the file

€‏n Ronaldo ùn~v4} ک‏n Portugal dv

there are some weird symbols