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Recap - Product Array

Part of the Fundamentals section of Coddy's C# journey — lesson 59 of 69.

Challenge

Easy

Write a method named `Prod` which gets an array of numbers as argument and returns the product of all the numbers in the list. Reminder, product is the multiplication of all the numbers, for `[1, 2, 3]`, return `6 = 1 * 2 * 3`.

Try it yourself

using System;

public class Program {
    public static int Prod(int[] arr) {
        // Write your code below
        
    }

    public static void Main(string[] args) {
        string text = Console.ReadLine();
        string[] stringArr = text.Split(',');
        int[] arr = new int[stringArr.Length];
        for (int i = 0; i < stringArr.Length; i++) {
            arr[i] = int.Parse(stringArr[i]);
        }
        
        int result = Prod(arr);
        Console.WriteLine("Product of array elements: " + result);
    }
}

All lessons in Fundamentals

1Introduction

C#Hello World!Comments Basic Program Structure

4Operators Part 1

Arithmetic Operators Modulo Operator Increment/Decrement Post Increment/Decrement Arithmetic Shortcuts

7Basic IO

Basic Output String Interpolation Reading Input Parse Recap - Till 120 Recap - True or False

10Methods (Functions)

Declaring Methods Method Parameters Return Types Optional Parameters Recap - Validation Function Void Methods

13Iterating Over Collections

Using For Loop Foreach Loop Common Array Operations

2Variables Part 1

Numbers Char String Boolean Type Declaration

5Operators Part 2

Comparison Operators Logical Operators Part 1 Logical Operators Part 2 Recap - Simple Logic Logical Operators Part 3

8Calculator App

Welcome Message Getting Numbers

Project lesson

Basic Operations

Project lesson

Formatted Output

Project lesson

11Arrays Basics

Declaring Arrays Accessing Elements Modifying Arrays Array MethodsRecap - Product ArrayEdit Recap - Reversed Array

14Final Challenges

Number Pattern Pattern Finder Student Grade Calculator

3Variables Part 2

Var Constants Naming Conventions Recap - Initialize Variables Type Casting

6Decision Making

If Statement If - Else Switch Statement Ternary Operator Recap - If Else Nested If - Else

9Loops

For Loop While Loop Do While Loop Break Continue Nested Loop Infinite Loop Recap - Dynamic Input

12String Operations

String Methods Part 1 String Methods Part 2 String Formatting