C++ classes

[wabbz111]

hi my problem is as follows
i have a program that calculates various
bodily functions. Im using classes for this.
if i choose option one the program
works fine.
However if i choosee another option say choice 2
the program just gives output using the values
that were entered before in choice one
Here is the code

#include <cstdlib>
#include <iostream>

using namespace std;

         ////////////////
class BodyStats
{
      public:
             BodyStats();
            //~BodyStats(); 
            int HeartRate,Age,Height,Bodyweight;
            
             double Bweight,LitersWater,MinWater,RMR;
         
            void FindHeartRate();
            void FindMenRMR();
            void FindFemaleRMR();
            void FindMinimumWater();
            void Stats();
            void Choice();
    /*void FindEnergyExpenditure()
         {
         cout<<"Enter your RMR"<<endl;
         cin<<RMR;
         cout<<
         }*/
         };
         
   BodyStats::BodyStats()
    :  HeartRate(0),
     Age(0),
     Height(0),
     Bodyweight(0)
   {}
  void BodyStats::FindHeartRate()        
    {
      while(Age<=0)
      {
          cout<<"Enter your age";
          cin>>Age;
            if(Age<=0)
               cout<<"Please Enter a valid age"<<endl;
      }
     HeartRate = 220-Age; 
     cout<<"your optimal heart rate is"<<HeartRate;
     
     }
     
  void BodyStats::FindMenRMR()
     {
                   
         while(Bodyweight<=0)
               {
                  cout<<"Enter your Weight(KG)";
                  cin>>Bodyweight;
                if(Bodyweight<=0)
                  cout<<"Please Enter a valid weight"<<endl;
                   cout<<""<<endl;
                }
           while(Height <= 0)
                {
                    cout<<"Enter your Height(CM)";
                    cin>>Height;
                  if(Height <= 0)
                    cout<<"Please Enter a valid height"<<endl;
                     cout<<""<<endl;
                 }
           while(Age <= 0) 
                {              
                       cout<<"Enter your age";
                       cin>>Age;
                    if(Age <= 0)
                        cout<<"Please Enter a valid age"<<endl;
                         cout<<""<<endl;
                }
                       RMR = 66 + (13.7 * Bodyweight)+(5 * Height)-(6.8 * Age);
                       cout<<"Your RMR is = "<<RMR<<endl;
                       
                      
                
       }
   void BodyStats::FindFemaleRMR()
      {
        while(Bodyweight<= 0)
        {
       cout<<"Enter your Weight(KG)"<<endl;
       cin>>Bodyweight;
        if(Bodyweight <= 0 || Bodyweight>=200)
        cout<<"Enter a valid weight"<<endl;
        }
        while(Height<= 0 || Height >= 250 )
        {
         
             cout<<"Enter your Height(CM)"<<""<<endl;
             cin>>Height;
          if (Height<= 0 || Height >= 250)
             cout<<"Enter a valid height"<<endl;
          }
          
          while(Age<=5 || Age>=100) 
          {
       cout<<"Enter your age"<<""<<endl;
       cin>>Age;
          if (Age<=5 || Age>=100)
          cout<<"Enter a valid age"<<endl;
          }
       RMR = 655 + (9.6 * Bodyweight)+(1.8 * Height)-(4.7 * Age);
        
        cout<<" "<<endl;
        
       cout<<"Your RMR is" <<""<<RMR<<endl;
       cout<<" "<<endl;
      
      
       }  
   void BodyStats::FindMinimumWater()
       {
        cout<<"Enter Bodyweight"<<endl;
        cin>>Bodyweight;

        Bweight = Bodyweight * 2.2;
        MinWater = Bweight / 2;
        LitersWater = MinWater/35;
        cout<<"Your optimal water intake should be"<<LitersWater<<"liters"<<endl;
        
        }    
    void BodyStats::Stats()
        {
          cout<<"Calories Per Gram"<<endl;
          cout<<"1 gram fat = 8 calories"<<endl;
          cout<<"1 gram carbohydrate = 4 calories"<<endl;
          cout<<"1 gram protein = 4 calories"<<endl;     
         }    
         
       
int main(int argc, char *argv[])
{
      
      BodyStats Body;
      int choice; 
      while(choice!=6) 
     {
      
      cout<<"1)Men RMR"<<endl;
      cout<<"2)Women RMR"<<endl;
      cout<<"3)Find Optimal Heart Rate"<<endl;
      cout<<"4)Minimum Water"<<endl;
      cout<<"5)Energy Expenditure"<<endl;
      cout<<"6)Quit"<<endl;
    
    
        cout<<"Enter your choice"<<endl;
        cin>>choice;
        
      
      switch(choice)
      {
            case 1:        
               Body.FindMenRMR();
               break;
            case 2:   
                Body.FindFemaleRMR();
               break;
            case 3:   
               Body.FindHeartRate();
                break;
            case 4:   
               Body.FindMinimumWater();
               break; 
            case 5:     
               Body.Stats();
               break;
            case 6:
                 return 0;
              break;   
      }  
    
}

    system("PAUSE");
    return 0;
}

please help out. Thanks

PS:Iam using DevC++

[Tevsky]

The problem is, in order to verify correct input for BodyStats::FindFemaleRMR() you test the condition while(Bodyweight<= 0), and since you already ran the program once using the male version, you set Bodyweight to be something above 0. So when you run it again for the female, it fails that condition for the while, and goes straight to the result.
Side Note: you've got some warnings in this code, make sure you compile at the highest warning level and get rid of those.