How to Assign a value to an increasing Variable like an array but without using array

Question

So I am making a calculator that could store a number inside a variable .But the thing is, the variable will increase if the user put an input 'y' for char compare .when the variable increases from 1 to 2 , the user can put a new input . I want to assign the new input to variable 2 . The variable could go ten times if the user put input 'y' for char compare ten times. It is like an array but I cannot use array for my project and I want to compare the number. I want the highest and the lowest number between the ten variables.

I tried to store the value, but then I don't know what to do after that.

char compare = 'Y';
int value = 1; // Value is a variable that increases
while (compare == 'y' || compare == 'Y') {
    cout << " enter value#" << value;
    cin >> num;
    cout << "do you want to compare?";
    cin >> compare;
    value++;
}

I expect the num will stick with the value and then compare it, but it seems that I cannot do it.

For example, user enter 100 for num and value 1, then user wanted to continue and put 300 for num and value 2.

Answer 1

Seems like you'd want an array like entity of variable size. In that case make use of std:vector and populate the 'num's in it.

Edit: The non usage of arrays was not mentioned earlier. Here's what you can do in that case:

char compare = 'Y';
int value = 1; // Value is a variable that increases
int num;
bool assigned = false;
int minNum = 0, maxNum = 0;
while (compare == 'y' || compare == 'Y') {
    cout << " enter value#" << value;
    cin >> num;
    if (!assigned || (num < minNum)) {
        minNum = num;
    }
    if (!assigned || (num > maxNum)) {
        maxNum = num;
    }
    if (!assigned)
        assigned = true;
    cout << "do you want to compare?";
    cin >> compare;
    value++;
}