Help Please!!!

[C++ Programming]

I have been working on this program problem for days. I am not good at this infact I am almost illiterate to the subject. I am taking a c++ class as a requirement for my math ed degree. However,I have gotten lost on the past few assignmetns and only have a couple more to go. This is the last and only Programming class that I need. Can someone please help me with this one?
Thanks in advance and havea blessed day!

///*****************************************************************
//This program will converts your weight on the sister planets!
//*****************************************************************

#include
#include
#include
using namespace std;
int choice;
float Weight;
namespace planet
bool dataok;

{
int main();
planet =0;
cout