go - variable declaration in init statement of for loop

Question

Yet another beginner's question for golang:

I can write:

for i := 0; i < 10; i++ {}

But if I want i to be of a specific type as int64, apparently I am not supposed to write:

for var i int64 = 0; i < 10; i++ {}

I am surprised that I cannot specify a type in the start statement of the for loop. I need to write something like this:

var i int64
for i = 0; i < 10; i++ {}

Am I missing a point here? Is there any explanation for it?

Answer 1

Waitting for answers