How do you handle huge if-conditions?

Question

It\'s something that\'s bugged me in every language I\'ve used, I have an if statement but the conditional part has so many checks that I have to split it over multiple lines, u

Answer 1

If you do this:

if (var1 == true) {
    if (var2 == true) {
        if (var3 == true) {
            ...
        }
    }
}

Then you can also respond to cases where something isn't true. For example, if you're validating input, you could give the user a tip for how to properly format it, or whatever.