{"id":6156,"date":"2025-01-24T18:01:43","date_gmt":"2025-01-24T18:01:43","guid":{"rendered":"http:\/\/localhost:8080\/csharp-test\/docs\/c\/lesson-10-array\/passing-array-as-parameter\/"},"modified":"2025-03-26T03:48:07","modified_gmt":"2025-03-26T03:48:07","slug":"passing-array-as-parameter","status":"publish","type":"docs","link":"https:\/\/www.completecsharptutorial.com\/docs\/csharp\/array\/passing-array-as-parameter\/","title":{"rendered":"Passing array as parameter"},"content":{"rendered":"\t\t
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Mastering Arrays: How to Pass Array as Parameter in C#<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\ud83c\udf1f Introduction<\/strong><\/h4>

Ever tried to carry a bunch of grocery bags at once? \ud83d\udecd\ufe0f It\u2019s tough, right? Instead, you grab a basket to hold them all. Similarly, in C#, arrays act like baskets that carry multiple values. But what if you want to hand that basket to a method? That\u2019s where passing arrays as parameters comes in!<\/p>

Sometimes, you might think, “How do I avoid writing the same code for multiple numbers?”<\/em> Or, “Is there a way to process a whole list at once?”<\/em> Well, good news\u2014you can! Passing arrays to methods makes your code cleaner, faster, and more efficient. Plus, it saves you from typing the same thing over and over!<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\r\n <\/i>\r\n
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\ud83d\udcda What You Are Going to Learn in This Lesson:<\/h5>\r\n

\u2714\ufe0f How to pass array as parameter in C# (with examples)
\u2714\ufe0f The syntax and how it works behind the scenes
\u2714\ufe0f Real-world scenarios to make things relatable and fun
\u2714\ufe0f Complete programs with detailed explanations and output
\u2714\ufe0f Tips to avoid common mistakes<\/p> <\/div>\r\n <\/div>\r\n \r\n \r\n \r\n \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\ud83d\udcdd Syntax of Passing an Array as a Parameter<\/strong><\/h4>

Here\u2019s the basic way to pass an array:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\r\n\t\t\t\t\r\n\t\t\t\t\tpublic void MethodName(dataType[] arrayName)  \r\n{\r\n    \/\/ Code to work with the array\r\n}\r\n\t\t\t\t<\/code>\r\n\t\t\t<\/pre>\r\n            <\/div>\r\n                \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\ud83d\udd0d Explanation:<\/strong><\/h4>
  • public void MethodName(...)<\/code>: Defines a method named MethodName<\/code>.<\/li>
  • dataType[] arrayName<\/code>: Takes an array of the specified data type as a parameter.<\/li>
  • Inside the curly braces {}<\/code>, you can process the entire array.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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    \ud83d\udcbb Example 1: Simple Program to Pass an Array<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    \r\n\t\t\t\t\r\n\t\t\t\t\tusing System;\r\n\r\nclass Program\r\n{\r\n    static void PrintNumbers(int[] numbers)\r\n    {\r\n        Console.WriteLine("Numbers in the array:");\r\n        foreach (int num in numbers)\r\n        {\r\n            Console.Write(num + " ");\r\n        }\r\n        Console.WriteLine();  \r\n    }\r\n\r\n    static void Main()\r\n    {\r\n        int[] myArray = { 10, 20, 30, 40, 50 };\r\n        PrintNumbers(myArray); \/\/ Passing the array to the method\r\n    }\r\n}\r\n\t\t\t\t<\/code>\r\n\t\t\t<\/pre>\r\n            <\/div>\r\n                \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    \ud83d\udd14 Output:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    \r\n\t\t\t\t\r\n\t\t\t\t\tNumbers in the array:\r\n10 20 30 40 50\r\n\t\t\t\t<\/code>\r\n\t\t\t<\/pre>\r\n            <\/div>\r\n                \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    \ud83d\udde3\ufe0f What\u2019s Happening Here?<\/strong><\/h4>
    • We created a method called PrintNumbers<\/code> that takes an integer array.<\/li>
    • The foreach<\/code> loop goes through each number in the array.<\/li>
    • We pass myArray<\/code> to the PrintNumbers<\/code> method, and it prints all the numbers.<\/li><\/ul>
      \ud83d\udc49 See how easy that was? Imagine having to write a print statement for each number. Total headache! This saves you so much time!<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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      \ud83c\udf0d Example 2: Real-World Scenario - Shopping Cart Prices<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      Let\u2019s say you have prices of items in your shopping cart. You want to find the total cost. Let\u2019s do it! \ud83d\uded2<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      \r\n\t\t\t\t\r\n\t\t\t\t\tusing System;\r\n\r\nclass Program\r\n{\r\n    static void CalculateTotal(double[] prices)\r\n    {\r\n        double total = 0;\r\n        foreach (double price in prices)\r\n        {\r\n            total += price;  \r\n        }\r\n        Console.WriteLine($"Total Price: ${total}");\r\n    }\r\n\r\n    static void Main()\r\n    {\r\n        double[] itemPrices = { 12.99, 23.50, 9.75, 5.00 };\r\n        CalculateTotal(itemPrices); \/\/ Passing array to calculate total\r\n    }\r\n}\r\n\t\t\t\t<\/code>\r\n\t\t\t<\/pre>\r\n            <\/div>\r\n                \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      \ud83d\udd14 Output:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      \r\n\t\t\t\t\r\n\t\t\t\t\tTotal Price: $51.24\r\n\t\t\t\t<\/code>\r\n\t\t\t<\/pre>\r\n            <\/div>\r\n                \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      \ud83e\udde0 Explanation:<\/strong><\/h4>
      • The method CalculateTotal<\/code> adds up all item prices.<\/li>
      • We pass itemPrices<\/code> to the method.<\/li>
      • It sums them up and prints the total cost.<\/li><\/ul>
        \ud83d\ude4c Imagine buying groceries and instantly knowing your total before checkout. Handy, right?<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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        \ud83d\udd25 Example 3: Finding Maximum Value in an Array<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        \r\n\t\t\t\t\r\n\t\t\t\t\tusing System;\r\n\r\nclass Program\r\n{\r\n    static void FindMax(int[] numbers)\r\n    {\r\n        int max = numbers[0];\r\n        foreach (int num in numbers)\r\n        {\r\n            if (num > max)\r\n                max = num;\r\n        }\r\n        Console.WriteLine($"Maximum Value: {max}");\r\n    }\r\n\r\n    static void Main()\r\n    {\r\n        int[] scores = { 88, 92, 75, 99, 85 };\r\n        FindMax(scores); \/\/ Passing array to find the highest score\r\n    }\r\n}\r\n\t\t\t\t<\/code>\r\n\t\t\t<\/pre>\r\n            <\/div>\r\n                \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        \ud83d\udd14 Output:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        \r\n\t\t\t\t\r\n\t\t\t\t\tMaximum Value: 99\r\n\t\t\t\t<\/code>\r\n\t\t\t<\/pre>\r\n            <\/div>\r\n                \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        \ud83d\udca1 Why This Is Cool:<\/strong><\/h4>
        • FindMax<\/code> checks each score to find the highest.<\/li>
        • Instead of comparing values one by one, you let the method do the heavy lifting!<\/li><\/ul>
          \ud83e\udd14 Ever wanted to find the top scorer in a class quickly? Here\u2019s your solution!<\/em> \ud83c\udf93<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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          \ud83c\udfb2 Example 4: Updating Array Values (Applying Discounts)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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          \r\n\t\t\t\t\r\n\t\t\t\t\tusing System;\r\n\r\nclass Program\r\n{\r\n    static void ApplyDiscount(double[] prices, double discountPercentage)\r\n    {\r\n        for (int i = 0; i < prices.Length; i++)\r\n        {\r\n            prices[i] -= prices[i] * (discountPercentage \/ 100);  \r\n        }\r\n\r\n        Console.WriteLine("Prices after discount:");\r\n        foreach (double price in prices)\r\n        {\r\n            Console.Write($"{price:F2} ");\r\n        }\r\n        Console.WriteLine();  \r\n    }\r\n\r\n    static void Main()\r\n    {\r\n        double[] itemPrices = { 50.00, 30.00, 20.00 };\r\n        ApplyDiscount(itemPrices, 10); \/\/ Passing array with discount\r\n    }\r\n}\r\n\t\t\t\t<\/code>\r\n\t\t\t<\/pre>\r\n            <\/div>\r\n                \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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          \ud83d\udd14 Output:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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          \r\n\t\t\t\t\r\n\t\t\t\t\tPrices after discount:\r\n45.00 27.00 18.00\r\n\t\t\t\t<\/code>\r\n\t\t\t<\/pre>\r\n            <\/div>\r\n                \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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          \ud83d\ude80 What\u2019s Happening:<\/strong><\/h4>
          • ApplyDiscount<\/code> reduces each price by the given discount.<\/li>
          • We pass the prices and the discount percentage.<\/li>
          • The array is updated, and new prices are displayed.<\/li><\/ul>
            \ud83d\udca5 Who doesn\u2019t love discounts? Now your code can handle them too!<\/em> \ud83d\ude0e<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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            \ud83c\udf89 Conclusion:<\/strong><\/h3>
            So, how are you feeling? Confident? Passing arrays as parameters isn\u2019t as scary as it sounds, right? \ud83d\ude0a By using arrays, you make your code neat, organized, and super efficient. Plus, you save yourself from repetitive work. Next time someone asks you “How to pass array as parameter in C#?”<\/em>\u2014you\u2019ll be ready to show off your skills!<\/p>
            \ud83d\udc49 Remember, practice makes perfect! Keep experimenting with different arrays and methods.<\/p>
            \u00a0<\/h3>
            \ud83d\ude80 Next What?<\/strong><\/h2>
            Hey! \ud83d\ude03 You\u2019ve just learned how to pass an array as a parameter<\/strong>\u2014that\u2019s awesome! \ud83c\udf89 I hope it wasn\u2019t too tricky. You\u2019re doing great, so keep it up!<\/p>
            Now, are you ready for the next exciting part? In the next chapter<\/strong>, you\u2019ll learn how to return an array from a method<\/strong>. \ud83c\udf81 This means you can send back a whole bunch of values at once\u2014pretty cool, right? Let\u2019s keep the learning fun and easy. See you there! \ud83d\ude80<\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/article>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"
            Learn how to pass array as parameter in C# with simple examples, real-world scenarios, and clear explanations. Make coding fun, easy, and stress-free!<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":6142,"menu_order":95,"comment_status":"open","ping_status":"closed","template":"","doc_tag":[],"class_list":["post-6156","docs","type-docs","status-publish","hentry","no-post-thumbnail"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/docs\/6156","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/comments?post=6156"}],"version-history":[{"count":10,"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/docs\/6156\/revisions"}],"predecessor-version":[{"id":8352,"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/docs\/6156\/revisions\/8352"}],"up":[{"embeddable":true,"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/docs\/6142"}],"wp:attachment":[{"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/media?parent=6156"}],"wp:term":[{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/doc_tag?post=6156"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}