C++ string array and bools

im currently trying to make little recipe app. I have made a string array with 10 strings and 10 bools. When I for example type Cinnemon I want to make the _Cinnemon true. How do I do that? Also is this written correctly, or could I make it better im quite new to programming. Lastly how can I fix it so it dosent have anything to say wheter its small letters or big.

Heres the code:

std::cout << "Welcome, type your ingredients " << std::endl;
std::string ingredients[10]{"Cinnemon", "Milk", "Eggs", "Butter", "Tomatoes", "Salt", "Backing Soda", "Suggar", "Chicken", "Honny"};
bool _cinnemon, _milk, _eggs, _butter, _tomatoes, _salt, _backingSoda, _Suggar, _chicken, _honny;
std::string ingredient;
int i = -1;
while (i = -1) {
    std::cin >> ingredient;
    i++;
    while (i < 9)
    {
        if (ingredient == ingredients[i]){
            std::cout << "Type another if you have any more igredients else type Exit" << std::endl;
            i++;
        } if (ingredient == "Exit" || "exit"){
            return 0;
        } else{
            i++;
        }
    }
} 

Thnks in advance, sorry for the bad english my mother thoung is Norwegian