How to make cin take only numbers

Question

Here is the code

double enter_number()
{
  double number;
  while(1)
  {

        cin>>number;
        if(cin.fail())
        {
            cin.clear()         


        

Answer 1

#include
#include
#include
using namespace std;
int get_int(void);
int main()
{
    puts("Enter a number");
    cout<<"The integer is "<

This works fine for any integer. It can even check if you enter a space or any other character after the integer. The only problem is that it does not make use of std::cin. But, the problem with std::cin is that it ignores any space character after the integer and happily takes the integer as input.