Question

I tried

    for (int i = 0, double j = 0.0f; i <= 30; i++, j++)

but it didn’t like that. It said ” ‘j’ undeclared “. It worked if both were ints. Is there not a way to declare it in the for loop?

Answer 1

You can only use a single statement in the loop initializer. So you’ll have to declare at least one of your vars outside the loop:

int i;
double j;
for (i = 0, j = 0.0f; i <= 30; i++, j++)

If it worked with two ints you probably used for (int i = 0, j = 0; ...) which is valid since only one statement (which declares multiple variables) is used.