Выделение памяти для строки

#include <stdio.h>
#include <Windows.h>
#include <iostream>
#include <string.h>
using namespace std;
int main()
{
    char *name = new char[50];
    for (int i = 0; i < 50; i++)
    {
        name[i] = NULL;
    }
    cout << "Please enter Text: ";
    cin >> name;
    cout << "Size text: " << sizeof(name) << endl;//4 байта 
    cout << "Long text: " << strlen(name) << endl << "text:" << name << endl;
    /********************/
    char name1[50];
    for (int i = 0; i < 50; i++)
    {
        name[i] = NULL;
    }
    cout << "Please enter Text: ";
    cin >> name1;
    cout << "Size text: " << sizeof(name1) << endl;//50 байт
    cout << "Long text: " << strlen(name1) << endl << "text:" << name << endl;
    system("pause");
 
    return 0;
 
 
}

#include <malloc.h>

 size_t s = _msize(name);
  cout << "Size text = " << s << endl;