dealing with integers

[kay jnr]

am working on encryption and would like to select and modify individual members of say a four digit integer. I achieved that with an array but would be glad if it could be done on an integer

[kay jnr]

its not an assignment, am just trying out something on my own

[E0p9LyTq]

You might want to look at the bitwise operators:
http://www.tutorialspoint.com/cprogramming/c_bitwise_operators.htm

[kay jnr]

like in this code sample, am able to perform a simple encryption on the array members.
what i want is use an integer instead of the array

int data[4]; // data to be encrypted
    int index, temporal;
    cout << "Enter the four digit integer:\nSeparate each digit with a space.\n";
    cin >> data[0] >> data[1] >> data[2] >> data[3];
   // perform step one of encryption process
    for( index = 0; index <= 3; index ++ )
    {
        data[ index ] = ( 7 + data[ index ] ) % 10;
    }
    // perform step two
    for( index = 0; index <= 1; index ++ )
    {
        temporal = data[ index ];
        data[ index ] = data[ index + 2 ];
        data[ index + 2 ] = temporal;
    }

[mbozzi]

It can't be done easily using decimal digits, but it's extremely easy to do upon the same number's binary representation using bitmath. Why won't that work for you?