C++,Shared_ptr, Please tell me why my code is giving an error?

getting error-

1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.25.28610\include\memory(1143,17): message : could be 'std::shared_ptr<int> &std::shared_ptr<int>::operator =(std::shared_ptr<int> &&) noexcept'
1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.25.28610\include\memory(1132,17): message : or       'std::shared_ptr<int> &std::shared_ptr<int>::operator =(const std::shared_ptr<int> &) noexcept'
1>E:\VS\HelloWorld\HelloWorld\main.cpp(14,10): message : while trying to match the argument list '(std::shared_ptr<int>, int *)'
1>Done building project "HelloWorld.vcxproj" -- FAILED.

#include <iostream>
#include <vector>
#include <algorithm>
#include<string>
#include  <memory>

using namespace std;

int main()
{
    shared_ptr<int> ptr = make_shared<int>();
    int l = 10;
    ptr = &l;
    cout << (*ptr) << endl;

    cin.get();
}