Go中多个for循环中的多个变量

Question

I have two for loops with two different set of variables, where I also reuse one variable from one loop in the next. The code looks roughly like this:

func naive(z, x, y []uint32, n int) {
    var i, j, k int
    var A, B uint32

    for i = 0; i < n; i++ {
        B = 0

        for j = 1; j <= i; j++ {
            muladd(x[j], y[i - j], &A)
        }

        for k = 1; j < n; j++, k++ {
            muladd(x[j], y[n - k], &B)
        }
    }
}

But I get an error message at the second for loop. It says missing { after for clause. Any ideas how to solve it?

Answer 1

when you increment both j and k on the last loop go doesn't like it

so try to change your code to

func naive(z, x, y []uint32, n int) {
    var i, j, k int
    var A, B uint32

    for i = 0; i < n; i++ {
        B = 0

        for j = 1; j <= i; j++ {
            muladd(x[j], y[i-j], &A)
        }

        for k = 1; j < n; j++ {
            muladd(x[j], y[n-k], &B)
            k++
        }
    }
}

pay attention to the last loop I just moved the k++ statement inside the loop