Get Unstuck: Objective "Stock Market"

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1

This is the second objective I’ve gotten stuck on and can’t figure out. I’ve logged into the discord channel and have asked twice for help. Not a very helpful community.

I am stuck on the following:
LEARN GO: LOOPS, ARRAYS, MAPS, AND STRUCTS – Stock Market – Step 5

It could be me but I think the wording isn’t clear. I had this same issue on the for loop objective.

2

Here’s my code:

package main

import (
“fmt”
“math/rand”
“time”
)

func randomNumberGen(min float32, max float32) float32 {
return min + (max-min)*rand.Float32()
}

// Task implementation goes here
type Stock struct {
name string
price float32
}

func (sto *Stock) updateStock() {
change := randomNumberGen(-10000, 10000)

sto.price = change
fmt.Println(sto.price)

}

func (sto *Stock) displayMarket(market string) {
for {
fmt.Println(market)
}

}

func main() {
rand.Seed(time.Now().UnixNano())
// Function calls go here
stockMarket := Stock{{“GOOG:”, 2313.50}, {“AAPL:”, 157.28}, {“FB:”, 203.77}, {“TWTR:”, 50.00}}

}

3

Hi there,

In your code you are not looping through the Stock slice.

I had the same problem, but managed to fix it here is my code below:

package main

import (
“fmt”
“math/rand”
“time”
)
func randomNumberGen(min float32, max float32) float32 {
return min + (max-min)*rand.Float32()
}
// Task implementation goes here
type Stock struct {
name string
price float32
}

func (stock *Stock) updateStock() {
change := randomNumberGen(-10000, 10000)
stock.price = change
}

func displayMarket(market Stock){
for i := 0; i <len(market); i++ {
fmt.Printf(“We have %s on the market for %f.\n”, market[i].name, market[i].price)
}
}

func main() {
rand.Seed(time.Now().UnixNano())
// Function calls go here
stockMarket := Stock{{“GOOG”, 2313.50}, {“AAPL”, 157.28}, {“FB”, 203.77}, {“TWTR”, 50.00}}

displayMarket(stockMarket)
stockMarket[2].updateStock()

displayMarket(stockMarket)
}

I hope this helps.

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