cin >> i;

for (i; i == 50; ++i)       //for starts at i, increases until i == 50                    
{                          //and saying ++i is more efficient than i++ in most cases
    list[i] = list[i + 1]  //The ith element gets the value from i+1, thus shifting everything to the left.
}

cin>>i;
while(i<49)
  list[i]=list[++i];
list[i]=NULL;

#include <iostream>
#include <cctype>

using namespace std;

const int SIZE = 100;
const int CAPACITY = 100;

enum Category 
{
    unknown = -1, meat, poultry, seafood, dairy, vegetable,
    fruit, grain, sweet, nCategory 
};

struct foodType
{
    char        name[SIZE];        // name of the food
    Category    category;        // what kind of food
    float        calories;        // calories
    float        carbohydrates;    // grams
    float        fat;            // grams
    float        cholesterol;    // grams
    float        sodium;            // grams
    float        protein;        // grams
};


//Prototypes
void showMenu();                                                //Displays initial database options
void executeCommand (char command, foodType list[],int &size);  //case statment that executes command choices for the database options
void addFood(foodType list[], int& size);                       //adds food choices to the array
void listFood(const foodType list[], int size);                 //lists food on the screen

void calculateMeal();                                           // Need to figure out how to calculate each food entry's atributes

char getCommand();                                              //command choice from database options

void deleteFoodIndex(int i);
int readInteger(char prompt[]);


//-------------------------------------------------------------------
//-------------------------------------------------------------------
//-------------------------------------------------------------------

int main ()
{
    foodType foodList[CAPACITY];
    char menuOption = '1';
    int listSize = 0;

    showMenu();
    while(menuOption != 'q')
    {
        menuOption = getCommand();
        executeCommand(menuOption, foodList, listSize);
    }

    cout << "Thank you for using nutricalc 1.0 " << endl;


}

//-------------------------------------------------------------------
//-------------------------------------------------------------------
//-------------------------------------------------------------------


//functions


void showMenu()
{
    cout << "Nutricalc 1.0" << endl;
    cout << "Implemented by: JoBlo" << endl;
    cout << "" << endl;
    cout << "" << endl;
    cout << "edit food database" << endl;
    cout << "    Commands: a(dd), l(ist), d(elete) index, m(eal), q(uit)" << endl;
    cout << "-----------------------------------------------------------" << endl;
    cout << "" << endl;
    cout << "> ";
}

char getCommand()
{
    char option;
    cin.get(option);
    cin.ignore(100, 'n');
    return option;
}

void executeCommand (char command, foodType list[], int &size)
{
    switch (command)
    {
    case 'a':
    case 'A':
        addFood(list, size);
        break;
    case 'l':
    case 'L':
        listFood(list, size);
        break;
    case 'd':
    case 'D':
        //deteteFoodIndex();
    case 'm':
    case 'M':
        //calculateMeal(list, size);
    default:
        cout<< "Illegeal command" <<endl;
    
    }
}

void addFood(foodType list[], int& size)
{
    foodType aFood;
    char ch;

    cout << "name:               > ";
    cin.get(aFood.name, SIZE, 'n');
    cin.ignore(100, 'n');

    aFood.category = static_cast <Category> (readInteger("meat = 0, poultry =1, seafood = 2, dairy = 3, vegetable = 4, fruit = 5, grain = 6, sweet = 7"));     //I can get this part to work, but not able to get it to diplay correctly. Ideas??
    
    aFood.calories          = readInteger("calories:             > ");
    aFood.carbohydrates     = readInteger("carbohydrates:        > ");
    aFood.fat               = readInteger("fat:                  > ");
    aFood.cholesterol       = readInteger("cholesterol:          > ");
    aFood.sodium            = readInteger("sodium:               > ");
    aFood.protein           = readInteger("protein:              > ");
    cout << ""    << endl;
    cout << "> ";

    list[size++] = aFood;

}

void listFood(const foodType list[], int size)
{
    for (int i = 0; i < size; i++)
    {
        cout << ""                                                                   << endl;
        cout << "index:          " << i                                              << endl;
        cout << "name:           " << list[i].name                                   << endl;
        cout << "category:       " << list[i].category                               << endl;
        cout << "calories:              " << list[i].calories         << ".00 grams" << endl;
        cout << "carbohydrates:         " << list[i].carbohydrates    << ".00 grams" << endl;
        cout << "fat:                   " << list[i].fat              << ".00 grams" << endl;
        cout << "cholesterol:           " << list[i].cholesterol      << ".00 grams" << endl;
        cout << "sodium:                " << list[i].sodium           << ".00 grams" << endl;
        cout << "protein:               " << list[i].protein          << ".00 grams" << endl;
        cout << ""                                                    << ".00 grams" << endl;
        cout << "> "                                                                        ;
    }
}

int readInteger(char prompt[])
{
    int temp;

    cout << prompt;
    cin >> temp;
    while(!cin)
    {
        //clear the error code of cin
        cin.clear();

        //remove the garbage on the input stream
        cin.ignore(100, 'n');

        //ask user to try again
        cout << "Illegal integer! Try again: ";

        //read in
        cin >> temp;
    }

    //remove the 'n'
    cin.ignore(100, 'n');

    return temp;
}

void calculateMeal()
{
    
}

void deleteFoodIndex()
{
    int i;
    
    cout << "Please enter food index to delete:" << endl;
    cin >> i;
    
    //for (i >= 0 ; i =< 50 ; x++);
    {
        
    }
        
    
}

int main ()
{
    foodType foodList[CAPACITY];
    ...
}

void deleteFoodIndex(foodtype &list)
{
    cin >> i;

    for ( ; i<50; i++)
    {
        if (i<49)
        {
            *list[i] = *list[i+1];
        }
        else
        {
            *list[i] = NULL;  //Or whatever you want to use as a blank
        }
    }