Q:

Swift program to calculate the power of a given number using recursion

belongs to collection: Swift User-defined Functions Programs

YasminRadwan26
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2022-07-10
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Here, we will create a recursive function to calculate the power of a given number and print the result on the console screen.

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YasminRadwan26
2022-07-10
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Program/Source Code:

The source code to calculate the power of a given number using recursion is given below. The given program is compiled and executed successfully.

// Swift program to calculate the power of a 
// given number using recursion

import Swift 

func RecursivePow(num:Int, power:Int)->Int {
	var result:Int = 1 
	if power > 0 {
		result = num * (RecursivePow(num:num, power:power-1)) 
	}
	return result 
}

var result = RecursivePow(num:3, power:4) 
	
print("Result: ",result)

Output:

Result:  81

...Program finished with exit code 0
Press ENTER to exit console.

Explanation:

In the above program, we imported a package Swift to use the print() function using the below statement,

import Swift;

Here, we created a recursive function RecursivePow() to calculate the specified power of a specified number and printed the result on the console screen.

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