Exercise: Foreach
Test your understanding of the foreach statement with this exercise.
To complete the exercises in this lesson, we require a review of the arrays and lists we learned earlier in this course. This knowledge will equip us with the tools to effectively solve the following exercises: calculating squares of numbers in a list and summing even numbers in an array, reinforcing our understanding of the foreach
loops through practical application.
Exercise 1: Square numbers with the foreach
loop
Problem statement
Write a foreach
loop that outputs the squares of the numbers from a list of integers.
For this exercise, we are primarily focusing on the following:
The
foreach
loop: To iterate over integers in a collectionCollection handling: Managing arrays or lists in C#
Arithmetic operations: Calculating the square of numbers
Control structures: Employing loops for task repetition
Sample input
Input is a collection of integers, for example, [1,3,5]
.
Expected output
For [1,3,5]
, the expected output is [1,9,25]
. Similarly, if the input is [4,89,54,98,29]
, the output would be [16,7921,2916,9604,841]
.
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