how to do this?

[AlanHudik]

how do i make a c++ file that will print the entered number like a number string on the screen?
Example:
I entered 123,
And it has shown
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[seeplus]

One simple way is like this:

#include <string>
#include <iostream>

int main() {
	std::string n;

	std::cout << "Enter number: ";
	std::cin >> n;

	for (const auto& c : n)
		std::cout << c << '\n';
}

Enter number: 123
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[Ganado]

Another recent thread on the topic: https://cplusplus.com/forum/beginner/284003/

[deleted account xyzzy]

Another way to do this, keeping the entered integer value as a number (a bit more complicated than seeplus' example):

#include <iostream>
#include <string>

int main()
{
   std::cout << "Enter a number: ";
   int num { };
   std::cin >> num;

   // std::to_string requires C++11 or later
   // https://en.cppreference.com/w/cpp/string/basic_string/to_string
   std::string num_str { std::to_string(num) };

   for (const auto& itr : num_str)
   {
      std::cout << itr << '\n';
   }
}