slow input

#include<iostream>
#include<windows.h>

using namespace std;

int main()
{
    int entermatrix;

    cout << " Press 1 to enter the matrix 0.0 " << endl;
    cin >> entermatrix;

    switch (entermatrix){
           case 1:
                do
                {

                         Sleep(2);
                         cout << "A B   D   F   H   J   L   N   P   R   T U   W   Y  " << endl;
                         cout << "!   # $   ^ & * ( ) _   - = , . ; '   | ? 0 1   0 1" << endl;
                         cout << "a   c   e   g   i   k   m   o   q   s t   v   x   z" << endl;
                         cout << "1 2 3 4 5 6 7 8 9 0 0 1 2 3 4 5 6 7 8 9 0 1 0 1 1 0" << endl;
                         cout << "0 1   1 0 0   0 1 1 0   1 0 0 0 0 1   1 1 0 1 1   0" << endl;
                         cout << "1 0 0 0   1 1 0   0 1 1 0 1   1 0 0 0 0 0   0   1 1" << endl;
                         cout << "0 0 0 0   1 0 0 0 1   0 1 0 0 0 0   1 0 1 0 1 1 0 0" << endl;


                         }while(entermatrix==1);



                         case 0:

                              cout << "later" << endl;
                              break;
                              system("pause");
                              return 0;
                              }
                              }