help with pointers

part of my software where i test certain crap out since im learning is about pointers.
Well I think im doin it right but it gives me errors.

Errors:

Code:

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1>d:\users\ant1jr\documents\visual studio 2005\projects\test 1\test 1\test 1.cpp(106) : error C2101: '&' on constant
1>d:\users\ant1jr\documents\visual studio 2005\projects\test 1\test 1\test 1.cpp(106) : error C2440: '=' : cannot convert from 'int' to 'int *'
1>        Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
1>d:\users\ant1jr\documents\visual studio 2005\projects\test 1\test 1\test 1.cpp(109) : error C2101: '&' on constant
1>d:\users\ant1jr\documents\visual studio 2005\projects\test 1\test 1\test 1.cpp(109) : error C2440: '=' : cannot convert from 'int' to 'int *'
1>        Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
1>d:\users\ant1jr\documents\visual studio 2005\projects\test 1\test 1\test 1.cpp(112) : error C2101: '&' on constant
1>d:\users\ant1jr\documents\visual studio 2005\projects\test 1\test 1\test 1.cpp(112) : error C2440: '=' : cannot convert from 'int' to 'int *'
1>        Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast

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Code:

Code:

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void Pointers()
{
int *p;
int 1;
int 2;
int 3;
int I;

cout<<"What do you want 1 to be?\n";
cin>> 1;
cin.ignore();
cout<<"What do you want 2 to be?\n";
cin>> 2;
cin.ignore();
cout<<"What do you want 3 to be?\n";
cin>> 3;
cin.ignore();
cout<<"What do you want the pointer to point to?\n";
cin>> I;
cin.ignore();
switch ( I ) {
        case 1: 
                        p = &1;
                        break;
                case 2:
                        p = &2;
                        break;
                case 3:
                        p = &3;
                        break;
    }
}

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Numbers are not valid variable names. How would your compiler tell if you wanted the variable or the actual value 2?

Edit: Also, assuming your code worked, if I entered "4" at the last question, then p could point to just about anything. Either reprompt the user for valid input, or use a default: and set it to something valid.

Always initalize a pointer on delcaration!!!!

Code:

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int *p = NULL;

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I dont get what the code is trying to do, the indentation is poor. Could you post the whole program if possble?

doesn't look like it was meant to accomplish anything useful, he said he was just learning about pointers.
add a letter before 1, 2 and 3 or change the names