Task: Box the compass
C: #include <stdio.h>

int main()
{
        int i, j;
        double degrees[] = { 0.0, 16.87, 16.88, 33.75, 50.62, 50.63, 67.5,
                84.37, 84.38, 101.25, 118.12, 118.13, 135.0, 151.87, 151.88,
                168.75, 185.62, 185.63, 202.5, 219.37, 219.38, 236.25, 253.12,
                253.13, 270.0, 286.87, 286.88, 303.75, 320.62, 320.63, 337.5,
                354.37, 354.38 };
        const char * names =  "North                 "
                              "North by east         "
                              "North-northeast       "
                              "Northeast by north    "
                              "Northeast             "
                              "Northeast by east     "
                              "East-northeast        "
                              "East by north         "
                              "East                  "
                              "East by south         "
                              "East-southeast        "
                              "Southeast by east     "
                              "Southeast             "
                              "Southeast by south    "
                              "South-southeast       "
                              "South by east         "
                              "South                 "
                              "South by west         "
                              "South-southwest       "
                              "Southwest by south    "
                              "Southwest             "
                              "Southwest by west     "
                              "West-southwest        "
                              "West by south         "
                              "West                  "
                              "West by north         "
                              "West-northwest        "
                              "Northwest by west     "
                              "Northwest             "
                              "Northwest by north    "
                              "North-northwest       "
                              "North by west         "
                              "North                 ";

        for (i = 0; i < 33; i++) {
                j = .5 + degrees[i] * 32 / 360;

                printf("%2d  %.22s  %6.2f\n", (j % 32) + 1, names + (j % 32) * 22,
                        degrees[i]);
        }

        return 0;
}

Go: package main

import "fmt"


func degrees2compasspoint(h float32) string {
    return compassPoint[cpx(h)]
}





func cpx(h float32) int {
    x := int(h/11.25+.5) % 32
    if x < 0 {
        x += 32
    }
    return x
}


var compassPoint = []string{
    "North",
    "North by east",
    "North-northeast",
    "Northeast by north",
    "Northeast",
    "Northeast by east",
    "East-northeast",
    "East by north",
    "East",
    "East by south",
    "East-southeast",
    "Southeast by east",
    "Southeast",
    "Southeast by south",
    "South-southeast",
    "South by east",
    "South",
    "South by west",
    "South-southwest",
    "Southwest by south",
    "Southwest",
    "Southwest by west",
    "West-southwest",
    "West by south",
    "West",
    "West by north",
    "West-northwest",
    "Northwest by west",
    "Northwest",
    "Northwest by north",
    "North-northwest",
    "North by west",
}

func main() {
    fmt.Println("Index  Compass point         Degree")
    for i, h := range []float32{0.0, 16.87, 16.88, 33.75, 50.62, 50.63, 67.5,
        84.37, 84.38, 101.25, 118.12, 118.13, 135.0, 151.87, 151.88, 168.75,
        185.62, 185.63, 202.5, 219.37, 219.38, 236.25, 253.12, 253.13, 270.0,
        286.87, 286.88, 303.75, 320.62, 320.63, 337.5, 354.37, 354.38} {
        index := i%32 + 1 
        fmt.Printf("%4d   %-19s %7.2f°\n", index, degrees2compasspoint(h), h)
    }
}