98 lines
1.8 KiB
Go
98 lines
1.8 KiB
Go
package main
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import (
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"fmt"
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"strconv"
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"time"
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)
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var numsToSum []int
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var choice2 int
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var isAveraged bool
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func getAverage(arr []int, c chan int) {
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sum := 0
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for i := 0; i < len(arr); i++ {
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sum = sum + arr[i]
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}
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c <- sum
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}
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func addToVec(num int) {
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numsToSum = append(numsToSum, num)
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}
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func statusMSG() {
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fmt.Printf("Current numbers: %v\n", numsToSum)
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fmt.Println("[1] Add number")
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fmt.Println("[2] Calculate average")
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fmt.Println("[3] Flush array")
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fmt.Println("[4] Exit")
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if isAveraged == true {
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fmt.Println()
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}
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}
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func getChoice2() {
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strchoice2 := scanLine()
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choice2, err = strconv.Atoi(strchoice2)
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catchErr(err)
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}
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func getNumToAdd() (num int) {
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fmt.Printf("Select your number: ")
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strnum := scanLine()
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num, err = strconv.Atoi(strnum)
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return num
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}
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func fun2() {
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// Create channel made for int values
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c := make(chan int)
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looper:
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for {
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clear()
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statusMSG()
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fmt.Printf("Choice: ")
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getChoice2()
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switch choice2 {
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case 1:
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numToAdd := getNumToAdd()
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addToVec(numToAdd)
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fmt.Printf("Succesfully added %v to the array\n", numToAdd)
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time.Sleep(time.Second)
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case 2:
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// Send function call to goroutine while providing the channel for communication
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go getAverage(numsToSum, c)
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// This is far better than repeating myself, I can even expand the amount of dots it'll use!
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thinkstr := "Thinking"
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for i := 0; i < 4; i++ {
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fmt.Printf("\r%v", thinkstr)
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time.Sleep(time.Second)
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thinkstr = thinkstr + "."
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}
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fmt.Printf("\r\n")
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// Get the result returned by the goroutine
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total := <-c
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average := total / len(numsToSum)
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fmt.Printf("The grand total is %v\n", total)
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fmt.Printf("The average value is %v\n", average)
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time.Sleep(time.Second * 3)
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case 3:
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fmt.Printf("\rThe array has been set to null")
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numsToSum = nil
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time.Sleep(time.Second)
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case 4:
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break looper
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}
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}
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}
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