Does not work _cgets. Identifier not found - c++

Question

I am trying to compile the following code in visual studio 2019:
#include <iostream>
#include <stdio.h>
#include <math.h>
#include <conio.h>
#include <string>
int main()
{
char buffer[5];
char* p;
buffer[0] = 3;
p = _cgets(buffer); // problem with _cgets
printf("\ncgets read %d symbols: \"%s\"\n", buffer[1], p);
printf("A pointer is returned %p, buffer[2] on %p\n", p, &buffer);
return 0;
}
But I see the following error:
main.cpp(11,9): error C3861: '_cgets': identifier not found

Answer 1

_cgets is no longer available, use _cgets_s instead:
#include <iostream>
#include <stdio.h>
#include <math.h>
#include <conio.h>
#include <string>
int main()
{
char buffer[5];
size_t sizeRead;
auto error = _cgets_s(buffer, &sizeRead);
printf("\ncgets read %zu symbols: \"%s\"\n", sizeRead, buffer);
return 0;
}
Or the much simpler c++ code:
#include <iostream>
#include <string>
int main()
{
std::string buffer;
std::getline(std::cin, buffer);
std::cout << "read " << buffer.size() << " characters \"" << buffer << "\"\n";
}