GOARCH="amd64"
GOBIN="/Users/xxx/Code/bin"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/xxx/Code"
GORACE=""
GOROOT="/usr/local/Cellar/go/1.9.2/libexec"
GOTOOLDIR="/usr/local/Cellar/go/1.9.2/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/p9/qsjy5d596g7btw_x12l2xn4m0000gn/T/go-build193965940=/tmp/go-build -gno-record-gcc-switches -fno-common"
CXX="clang++"
CGO_ENABLED="1"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"

package main

import (
	"fmt"
)

func main() {
	runes := []rune("abcdefghijk")
	i := 0
		
	fmt.Printf("1.) Expected output: 'ab'. Actual output: '%s'\n", string(runes[0:inc(&i, 2)]))
	fmt.Printf("2.) Expected value of 'i' is '2'. Actual value is %d.\n", i)
	println()
	
	fmt.Printf("3.) Expected output: 'cde'. Actual output: '%s'\n", string(runes[2:inc(&i, 3)]))
	fmt.Printf("4.) Expected value of 'i' is '5'. Actual value is %d.\n", i)
	println()
	
	fmt.Printf("5.) Expected output: 'ef'. Actual output: '%s'\n", string(runes[2:inc(&i, 2)]))
	fmt.Printf("6.) Expected value of 'i' is '7'. Actual value is %d.\n", i)
	println()
	
	fmt.Printf("7.) Expected output: 'ghi'. Actual output: '%s' (<--- Unexpected!)\n", string(runes[i:inc(&i, 3)]))
	fmt.Printf("8.) Expected value of 'i' is '10'. Actual value is %d.\n", i)
	println()
	
}

func inc(counterValue *int, incrementAmount int) int {
	*counterValue = *counterValue + incrementAmount
	return *counterValue
}

1.) Expected output: 'ab'. Actual output: 'ab'
2.) Expected value of 'i' is '2'. Actual value is 2.

3.) Expected output: 'cde'. Actual output: 'cde'
4.) Expected value of 'i' is '5'. Actual value is 5.

5.) Expected output: 'ef'. Actual output: 'cdefg'
6.) Expected value of 'i' is '7'. Actual value is 7.

7.) Expected output: 'ghi'. Actual output: '' (<--- Unexpected!)
8.) Expected value of 'i' is '10'. Actual value is 10.