How to solve these coding exercises:


Coding Exercise #1

Using the const keyword declare and initialize the following constants:

1. daysWeek with value 7

2. lightSpeed with value 299792458

3. pi with value 3.14159

Run the program without errors.

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Coding Exercise #2

Change the code from the previous exercise and declare all 3 constants as grouped constants.

Make them untyped.

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Coding Exercise #3

 Calculate how many seconds are in a year.

 STEPS:

 1. Declare secPerDay constant and initialize it to the number of seconds in a day

 2. Declare daysYear constant and initialize it to 365

 3. Use fmt.Printf() to print out the total number of seconds in a year.

EXPECTED OUTPUT:

There are 31536000 seconds in a year.

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Coding Exercise #4

There are an error in the following Go program. Try to identify the error, change the code and run the program without errors.

package main

func main() {
    const x int = 10

    // declaring a constant of type slice int ([]int)
    const m = []int{1: 3, 4: 5, 6: 8}
    _ = m
}

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Coding Exercise #5

There are some errors in the following Go program. Try to identify the errors, change the code and run the program without errors.

package main

import "math"

func main() {
	const a int = 7
	const b float64 = 5.6
	const c = a * b

	x := 8
	const xc int = x

	const noIPv6 = math.Pow(2, 128)
}

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Coding Exercise #6

Using Iota declare the following months of the year: Jun, Jul and Aug

Jun, Jul and Aug are constant and their value is 6, 7 and 8.

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