Store a result in a constant

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Created Jul ’22

Replies 2

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Hi, I am doing the first question of the last exercise on the following screenshot. However, I don't really understand the two questions. How is it possible to store a result in a constant, if the result itself is declared with 'let', making it a constant? I sure am not understanding correctly the question, understandable with the fact I just started learning code. Here's the block of code.

  
    let total = pigsFlying + frogsBecomingPrinces + multipleLightningStrikes
 
    return total
 
}
 
 
 
 
 
/*:
 
 - callout(Exercise): Update the `impossibleBeliefsCount` function so that instead of printing the value, it returns it as an `Int`.
 
 
 
`impossibleThingsPhrase` creates a phrase using string interpolation:
 
 */
 
func impossibleThingsPhrase(numberOfImpossibleThings: Int, meal: String) -> String {
 
    return "Why, I've believed as many as \(numberOfImpossibleThings) before \(meal)"
 
}
 
 
 
impossibleThingsPhrase(numberOfImpossibleThings: 712, meal: "chicken")
 
/*:
 
 - callout(Exercise): Update the `impossibleThingsPhrase` function so that, instead of using its two internal constants, it takes two arguments: `numberOfImpossibleThings` as an `Int` and `meal` as a `String`.
 
 
 
Now you have two functions that take parameters and return values.
 
 
 
 - callout(Exercise): Call `impossibleBeliefsCount` and store the result in a constant.\
 
Call `impossibleThingsPhrase`, passing in the result of `impossibleBeliefsCount` as one of the arguments.
 
 */
 
func impossibleBeliefsCount(pigsFlying: Int, frogsBecomingPrinces: Int, multipleLightningStrikes: Int) {
 
    let total = pigsFlying + frogsBecomingPrinces + multipleLightningStrikes
 
    return total
 
}

Capture d’écran 2022-07-22 à 19.09.08.png

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Answer 1

Kwiky OP

Jul ’22

Edit: I found the answer after thinking about it just a little bit..

0

Answer 2

Claude31 OP

Jul ’22

Thanks for feedback and just close the thread.

Issue was that impossibleBeliefsCount had no returned value. Need:

 func impossibleBeliefsCount(pigsFlying: Int, frogsBecomingPrinces: Int, multipleLightningStrikes: Int) -> Int {
 
    let total = pigsFlying + frogsBecomingPrinces + multipleLightningStrikes
 
    return total
 
}

1


	let total = pigsFlying + frogsBecomingPrinces + multipleLightningStrikes

	return total

	}





	/*:

	- callout(Exercise): Update the `impossibleBeliefsCount` function so that instead of printing the value, it returns it as an `Int`.



	`impossibleThingsPhrase` creates a phrase using string interpolation:

	*/

	func impossibleThingsPhrase(numberOfImpossibleThings: Int, meal: String) -> String {

	return "Why, I've believed as many as \(numberOfImpossibleThings) before \(meal)"

	}



	impossibleThingsPhrase(numberOfImpossibleThings: 712, meal: "chicken")

	/*:

	- callout(Exercise): Update the `impossibleThingsPhrase` function so that, instead of using its two internal constants, it takes two arguments: `numberOfImpossibleThings` as an `Int` and `meal` as a `String`.



	Now you have two functions that take parameters and return values.



	- callout(Exercise): Call `impossibleBeliefsCount` and store the result in a constant.\

	Call `impossibleThingsPhrase`, passing in the result of `impossibleBeliefsCount` as one of the arguments.

	*/

	func impossibleBeliefsCount(pigsFlying: Int, frogsBecomingPrinces: Int, multipleLightningStrikes: Int) {

	let total = pigsFlying + frogsBecomingPrinces + multipleLightningStrikes

	return total

	}