如何根据它们的值将两个双精度数分配给不同的变量？

Question

I am trying to compare the value of two double inputs and assign them as different variables depending on which one is greater. I have this code so far but it doesn't seem to be working. What should I change?

double a, b;
double q, w;

cout << "Enter the first value of the first range: " << endl;
cin >> a;
cout << "Enter the second value of the first range: " << endl;
cin >> b;


if (a < b) {
    a = q, b = w;
}
else {
    b = q, a = w;
}

Answer 1

I think what you meant to do is:

if (a < b)
{
    q = a;
    w = b;
}
else
{
    q = b;
    w = a;
}

By the way, a more compact way to achieve the same result would be:

q = std::min(a, b);
w = std::max(a, b);

Answer 2

Try this, you have to change the lines on the assignment like that and give at q and wa value before use them.

double a, b;
double q=0, w=0;

cout << "Enter the first value of the first range: " << endl;
cin >> a;
cout << "Enter the second value of the first range: " << endl;
cin >> b;


if (a < b) {
    a = q;
    b = w;
}
else {
    b = q
    a = w;
}