findSumEvenNumbersInRange()

Step 1: Define The Function

Firstly, we define a function findSumEvenNumbersRange with two parameters: start and end. These parameters will specify the range in which we will search for the even numbers.

func findSumEvenNumbersRange(start: Int, end: Int) {
    // function body will go here
}

Step 2: Working With The Range

Inside this function, we'll utilize Swift's stride function to generate a sequence of numbers within the range.

func findSumEvenNumbersRange(start: Int, end: Int) {
    for number in stride(from: start, to: end + 1, by: 1) {
        // will check for even numbers here
    }
}

Step 3: Validate Even Numbers

In this step, we will validate if a number is even or not. In Swift, we can use the modulus operator % to check if the remainder of the number divided by 2 is zero.

func findSumEvenNumbersRange(start: Int, end: Int) {
    for number in stride(from: start, to: end + 1, by: 1) {
        if number % 2 == 0 {
            // number is even
        }
    }
}

Step 4: Calculate The Sum

Subsequently, we will calculate the sum of the even numbers. For this, we need to define a variable sum before the loop starts. Then, inside the if-statement, sum up the even numbers.

func findSumEvenNumbersRange(start: Int, end: Int) -> Int {
    var sum = 0
    for number in stride(from: start, to: end + 1, by: 1) {
        if number % 2 == 0 {
            sum += number
        }
    }
    return sum
}

Step 5: Conclusion

Finally, we have developed a function that takes a range as input and returns the sum of all even numbers within that range. Here is the complete code.

func findSumEvenNumbersRange(start: Int, end: Int) -> Int {
    var sum = 0
    for number in stride(from: start, to: end + 1, by: 1) {
        if number % 2 == 0 {
            sum += number
        }
    }
    return sum
}