GetAsyncKeyState not working after using cin

[ntantar]

Hi,

I have a menu option that the user will toggle through after the user enters some information however, when I get to the menu option I think that GetAsyncKeyState(VK_RETURN) is non zero once the program reaches my function - which makes it skip past the menu option screen entirely

Header file:

#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
#include <ctime>
#include <time.h>
#include <windows.h>
#include <conio.h>
#include <limits>
using namespace std;
enum scroll
{
 CALORIES, EXERCISE, STEPS, STATS, EDIT, ORGANIZE, EXIT, NEXTDAY
};
enum Gend
{
 NONE, MALE, FEMALE
};
class GetStartingInfo
{
private:
 string Name;
 double Age;
 double Height;
 double Weight;
 double GoalWeight;
 double BMR;
 double DailyDefecitToMeetGoal;
 int Sex;
 int Days;
public:
 string GetName();
 void GetSex();
 void SetName();
 double GetHeight();
 void SetHeight();
 double GetAge();
 void SetAge();
 double GetWeight();
 void SetWeight();
 double GetGoalWeight();
 void SetGoalWeight();
 int GetDaysToFinish();
 void SetDaysToFinish();
 void SetBMR();
 void SetDailyCaloriesToMeetGoal();
 void WriteToFile();
 GetStartingInfo();
};
class Menu
{
private:
 int option;
 int pointer;
 string DisplayMenu[8];
public:
 void SetMenuOptions();
 void PrintMenu();
 void WrapMenu();
 int ReturnedOption();
};

definitions:

#include "header.h"

string GetStartingInfo::GetName()
{
 string name;
    cout << "Enter your name:";
 getline(cin, name);
 system("cls");
    return name;
}
void GetStartingInfo::SetName()
{
 Name = GetName();
}
void GetStartingInfo::GetSex()
{
 int sexPointer = 0;
 string sex[2] = { "Male", "Female" };
 while (!GetAsyncKeyState(VK_RETURN))
 {
  system("cls");
  cout << endl;
  cout << "Choose your sex:\n\n";
  for (int i = 0; i < 2; i++)
  {
   if (i == sexPointer)
   {
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 115);
    cout << sex[i] << endl;
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 15);
   }
   else
   {
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 15);
    cout << sex[i] << endl;
   }
  }
  if (GetAsyncKeyState(VK_UP) != 0)
  {
   sexPointer -= 1;
   if (sexPointer == -1)
    sexPointer = 1;

  }
  else if (GetAsyncKeyState(VK_DOWN) != 0)
  {
   sexPointer += 1;
   if (sexPointer == 2)
    sexPointer = 0;
  }
  else if (GetAsyncKeyState(VK_RETURN) != 0)
  {
   switch (sexPointer)
   {
   case 0:
   {
    Sex = MALE;
    return;
   }break;
   case 1:
   {
    Sex = FEMALE;;
    return;
   }break;
  
   }
  }
  _sleep(200);
 }
 system("cls");
 cin.ignore();
}
double GetStartingInfo::GetHeight()
{
 double height;
 cout << "Enter your height(inches):";
 cin >> height;
 system("cls");
 return height;
}
void GetStartingInfo::SetHeight()
{
 Height = GetHeight();
}
double GetStartingInfo::GetAge()
{
 double age;
 cout << "Enter your age:";
 cin >> age;
 system("cls");
 return age;
}
void GetStartingInfo::SetAge()
{
 Age = GetAge();
}
double GetStartingInfo::GetWeight()
{
 double weight;
 cout << "Enter your weight:";
 cin >> weight;
 system("cls");
 return weight;
}
void GetStartingInfo::SetWeight()
{
 Weight = GetWeight();
}
double GetStartingInfo::GetGoalWeight()
{
 double goal;
 cout << "Enter your goal weight:";
 cin >> goal;
 system("cls");
 return goal;
}
int GetStartingInfo::GetDaysToFinish()
{
 int target;
 cout << "How many days do you need to get to your target weight?";
 cin >> target;
 system("cls");
 return target;
}
void GetStartingInfo::SetDaysToFinish()
{
 Days = GetDaysToFinish();
}
void GetStartingInfo::SetGoalWeight()
{
 GoalWeight = GetGoalWeight();
}
void GetStartingInfo::SetBMR()
{
 if (Sex == MALE)
    BMR = 66.47 + (13.7 * (Weight * 0.453592)) + (5 * (Height * 2.54)) - (6.8 * Age);
 else if(Sex == FEMALE)
  BMR = 655.1 + (9.6 * (Weight * 0.453592)) + (1.8 * (Height * 2.54)) - (4.7 * Age);
}
void GetStartingInfo::SetDailyCaloriesToMeetGoal()
{
 DailyDefecitToMeetGoal = ((Weight - GoalWeight) / (Days)) * 3500;
}
void GetStartingInfo::WriteToFile()
{
 ofstream file("userprofile.txt");
 file << Name << "," << Age << "," <<  Height << "," << Weight << "," << GoalWeight << "," << BMR << "," << DailyDefecitToMeetGoal << "," << Sex << "," << Days << endl;
 file.close();
}
GetStartingInfo::GetStartingInfo()
{
 GetSex();
 SetName();
 SetHeight();
 SetAge();
 SetWeight();
 SetGoalWeight();
 SetDaysToFinish();
 SetBMR();
 SetDailyCaloriesToMeetGoal();
 WriteToFile();
}
void Menu::SetMenuOptions()
{
 DisplayMenu[0] = "Log Calories";
 DisplayMenu[1] = "Log an Exercise";
 DisplayMenu[2] = "Log Steps";
 DisplayMenu[3] = "View Stats";
 DisplayMenu[4] = "Edit Profile";
 DisplayMenu[5] = "Organize";
 DisplayMenu[6] = "Exit";
 DisplayMenu[7] = "Next Day";
}
void Menu::PrintMenu()
{
 pointer = 0;
 FlushConsoleInputBuffer(GetStdHandle(STD_INPUT_HANDLE));
 while (!GetAsyncKeyState(VK_DOWN))
 {
  system("cls");
  cout << endl;
  cout << "Main Menu\n\n";
  for (int i = 0; i < 8; i++)
  {
   if (i == pointer)
   {
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 115);
    cout << DisplayMenu[i] << endl;
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 15);
   }
   else
   {
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 15);
    cout << DisplayMenu[i] << endl;
   }
  }
  if (GetAsyncKeyState(VK_UP) != 0)
  {
   pointer -= 1;
   if (pointer == -1)
    pointer = 7;

  }
  else if (GetAsyncKeyState(VK_DOWN) != 0)
  {
   pointer += 1;
   if (pointer == 8)
    pointer = 0;
  }
  else if (GetAsyncKeyState(VK_RETURN) != 0)
  {
   switch (pointer)
   {
   case 0: 
   {
    option = CALORIES;
    return;
   }break;
   case 1:
   {
    option = EXERCISE;
    return;
   }break;
   case 2:
   {
    option = STEPS;
    return;
   }break;
   case 3:
   {
    option = STATS;
    return;
   }break;
   case 4:
   {
    option = EDIT;
    return;
   }break;
   case 5:
   {
    option = ORGANIZE;
    return;
   }break;
   case 6:
   {
    option = EXIT;
    return;
   }break;
   case 7:
   {
    option = NEXTDAY;
    return;
   }break;
  }
 }
  _sleep(200);
 }
}
void Menu::WrapMenu()
{
 SetMenuOptions();
 PrintMenu();
 ReturnedOption();
 
}
int Menu::ReturnedOption()
{
 return option;
}

main:

#include "header.h"
int main(void)
{
 Menu menu;
 GetStartingInfo Info;

 menu.WrapMenu();
 return 0;
}

[ntantar]

It actually prints the menu but when I attempt to toggle through the list - the program is already at the end and closes

[ntantar]

I also got rid of FlushConsoleInputBuffer(GetStdHandle(STD_INPUT_HAN DLE)); in the PrintMenu() function and changed the while loop to while(true) - it still does not work

[ntantar]

OK - I found a solution to my problem however, I think this is only a band - aid and I still haven't figured out why the program is responding the way it is. For the PrintMenu function, I make the function skip the switch statement during the first iteration. This somehow allows me to proceed with the program:

void Menu::PrintMenu()
{
 pointer = 0;
 int i = 0;
 while (true)
 {
  system("cls");
  cout << endl;
  cout << "Main Menu\n\n";
  for (int i = 0; i < 8; i++)
  {
   if (i == pointer)
   {
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 115);
    cout << DisplayMenu[i] << endl;
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 15);
   }
   else
   {
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 15);
    cout << DisplayMenu[i] << endl;
   }
  }
  if (GetAsyncKeyState(VK_UP) != 0)
  {
   pointer -= 1;
   if (pointer == -1)
    pointer = 7;

  }
  else if (GetAsyncKeyState(VK_DOWN) != 0)
  {
   pointer += 1;
   if (pointer == 8)
    pointer = 0;
  }
  else if (GetAsyncKeyState(VK_RETURN) != 0)
  {
   /*Function must loop at least once. This is because the call for GetAsyncKeyState(VK_RETURN) returns a non zero value during the first iteration. Not sure why but
   this is the quick fix solution*/
   if (i > 0)
   {
    switch (pointer)
    {
    case 0:
    {
     option = CALORIES;
     return;
    }break;
    case 1:
    {
     option = EXERCISE;
     return;
    }break;
    case 2:
    {
     option = STEPS;
     return;
    }break;
    case 3:
    {
     option = STATS;
     return;
    }break;
    case 4:
    {
     option = EDIT;
     return;
    }break;
    case 5:
    {
     option = ORGANIZE;
     return;
    }break;
    case 6:
    {
     option = EXIT;
     return;
    }break;
    case 7:
    {
     option = NEXTDAY;
     return;
    }break;
    }
   }
 }
  _sleep(200);
  i++;
 }
}

[GReaper]

In order to determine if the key is pressed or not, you need to do this:

if (GetAsyncKeyState(VK_DOWN) & 0x8000)

GetAsyncKeyState function (Windows)