Converting ASCII to Binary in C++

Hi guys I'm trying to write a program to convert ASCII code into binary but it is not working properly.

Code:

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
    char character;
    int i;
    int m[8];


    cout<<"Please enter a character: ";
    cin>>character;
    cout<<"You've entered "<<character<<endl;

    for(i=0;i<8;i++)
    {
        m[i]=character%2;
        character = character/2;
    }

    int top, bottom;

    for(bottom=0,top =7; bottom<8; bottom++,top--)
    {
        m[bottom]=m[top];
        cout<<m[top];
    }

    return 0;
}

This is what I have so far. It works for the letter 'A' but it also output the identical binary number for B or C and it goes completely crazy if I type in 'V'.

Please help me find the error.

> m[bottom]=m[top];
What does this do?

Try it without it.

Wow thank you. I have no idea what I was thinking.