{"id":6150,"date":"2025-01-24T18:00:56","date_gmt":"2025-01-24T18:00:56","guid":{"rendered":"http:\/\/localhost:8080\/csharp-test\/docs\/c\/lesson-10-array\/one-dimensional-array\/"},"modified":"2025-03-26T03:48:07","modified_gmt":"2025-03-26T03:48:07","slug":"one-dimensional-array","status":"publish","type":"docs","link":"https:\/\/www.completecsharptutorial.com\/docs\/csharp\/array\/one-dimensional-array\/","title":{"rendered":"Single Dimensional Array"},"content":{"rendered":"\t\t
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Single Dimensional Array in C# with Examples and Simple Guide<\/h2>\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\ude80 Introduction<\/strong><\/p>

Hey there, coding champ! \ud83d\udc4b Ever found yourself juggling too many variables? Like trying to remember a grocery list without writing it down? \ud83d\uded2 Well, arrays are here to save your day! Today, we\u2019ll dive into the Single Dimensional Array in C#<\/strong>, the simplest and most useful type of array.<\/p>

By the end of this lesson, you\u2019ll know how to create, use, and rock arrays in your programs. Ready? Let\u2019s roll! \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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\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 What is a Single Dimensional Array in C#?
\u2714\ufe0f How to declare and initialize it.
\u2714\ufe0f Real-life relatable examples.
\u2714\ufe0f Code snippets with step-by-step explanations.
\u2714\ufe0f Common mistakes and how to avoid them.<\/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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\ud83e\udde9 What is a Single Dimensional Array in C#?<\/strong><\/h3>

Imagine you have 5 exam scores to store. You could create 5 separate variables… or just use one array<\/strong> to store them all. That\u2019s where a Single Dimensional Array in C#<\/strong> shines!<\/p>

\ud83d\udc49 It\u2019s like a row of boxes, each holding a value, neatly arranged side-by-side.<\/p>

\u00a0<\/h4>

\ud83c\udf55 Real-Life Scenario<\/strong><\/h4>

Think of a pizza \ud83c\udf55 sliced into 8 pieces. Each slice has a number (index), starting from 0. Want the 3rd slice? Grab the one at index 2. Arrays work just like that\u2014easy peasy!<\/p>

\u00a0<\/h3>

\ud83d\udda5\ufe0f Declaring and Initializing a C# Single Dimensional Array<\/strong><\/h3>

\ud83d\udcdd Syntax:<\/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\tdatatype[] arrayName = new datatype[size];\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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  • \u2705 datatype:<\/strong> Type of values (int, string, etc.)<\/li>
  • \u2705 arrayName:<\/strong> Your chosen name.<\/li>
  • \u2705 size:<\/strong> Number of elements.<\/li><\/ul>
    \u00a0<\/p>
    \ud83d\udcbb Example 1: Declaring and Initializing an Array<\/strong><\/h4>\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\tint[] numbers = new int[5]; \/\/ Declares an array of 5 integers\r\nnumbers[0] = 10;  \r\nnumbers[1] = 20;  \r\nnumbers[2] = 30;  \r\nnumbers[3] = 40;  \r\nnumbers[4] = 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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    \ud83e\uddd0 Explanation:<\/strong><\/h4>
    • int[] numbers<\/code> declares an integer array.<\/li>
    • new int[5]<\/code> creates space for 5 integers.<\/li>
    • Indexes start from 0<\/code>. So, numbers[0]<\/code> holds 10<\/code>, numbers[1]<\/code> holds 20<\/code>, and so on.<\/li><\/ul>
      \u00a0<\/p>
      \ud83d\ude80 Example 2: Initializing Directly<\/strong><\/h4>\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\tstring[] fruits = { "Apple", "Banana", "Cherry", "Mango" };\r\nConsole.WriteLine(fruits[2]); \/\/ Output: Cherry\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\udd0d Explanation:<\/strong><\/h4>
      • We created and initialized the array in one line.<\/li>
      • fruits[2]<\/code> prints \"Cherry\"<\/code>, since indexing starts at 0<\/code>.<\/li><\/ul>
        \u00a0<\/h4>
        \ud83c\udfc3\u200d\u2642\ufe0f Example 3: Iterating Through an Array<\/strong><\/h4>
        Let\u2019s print all elements using a loop:<\/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\tint[] ages = { 21, 25, 30, 35, 40 };\r\n\r\nfor (int i = 0; i < ages.Length; i++)\r\n{\r\n    Console.WriteLine($"Age at index {i}: {ages[i]}");\r\n}\r\n\t\t\t\t<\/code>\r\n\t\t\t<\/pre>\r\n            <\/div>\r\n                \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        \ud83d\udda5\ufe0f Output:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        \r\n\t\t\t\t\r\n\t\t\t\t\tAge at index 0: 21  \r\nAge at index 1: 25  \r\nAge at index 2: 30  \r\nAge at index 3: 35  \r\nAge at index 4: 40  \r\n\t\t\t\t<\/code>\r\n\t\t\t<\/pre>\r\n            <\/div>\r\n                \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        \ud83d\udca1 Pro Tip:<\/strong> Using .Length<\/code> helps avoid going out of bounds! \ud83d\ude0e<\/p>
        \u00a0<\/p>
        \ud83c\udf7f Example 4: Real-World Scenario<\/strong><\/h4>
        \ud83c\udfac Imagine booking seats in a cinema hall. Each seat is numbered, and you want to check which ones are booked.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        \r\n\t\t\t\t\r\n\t\t\t\t\tbool[] seatsBooked = { true, false, true, false, true };\r\n\r\nfor (int i = 0; i < seatsBooked.Length; i++)\r\n{\r\n    string status = seatsBooked[i] ? "Booked" : "Available";\r\n    Console.WriteLine($"Seat {i + 1}: {status}");\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\udda5\ufe0f 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\tSeat 1: Booked  \r\nSeat 2: Available  \r\nSeat 3: Booked  \r\nSeat 4: Available  \r\nSeat 5: Booked  \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\udd25 Pretty relatable, right? Now you can track seats like a pro! \ud83c\udf9f\ufe0f<\/p>
        \u00a0<\/h3>
        \ud83e\udde8 Common Mistakes to Avoid:<\/strong><\/h3>
        \ud83d\udeab 1. Forgetting zero-based indexing:<\/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\tConsole.WriteLine(fruits[4]); \/\/ Error! fruits has only 4 elements (0-3)\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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        \u2705 Solution:<\/strong> Always check the length using .Length<\/code>.<\/p>
        \u00a0<\/p>
        \ud83d\udeab 2. Not initializing the array:<\/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\tint[] arr;\r\nConsole.WriteLine(arr[0]); \/\/ Error! Array not initialized\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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        \u2705 Solution:<\/strong> Always use new<\/code> or initialize directly.<\/p>
        \u00a0<\/p>
        \ud83c\udf89 Conclusion<\/strong><\/h3>
        Woohoo! \ud83c\udf8a You just mastered the Single Dimensional Array in C#<\/strong>! Arrays help you organize data like a champ and make your code super clean. With just one variable, you can hold tons of values. Cool, right? \ud83d\ude0e<\/p>
        Feeling confident? Or still puzzled by something? Either way, you\u2019re making amazing progress\u2014keep it up! \ud83d\ude80<\/p>
        \u00a0<\/h3>
        \ud83d\udc49 Next what?<\/strong><\/h3>
        Up next: Multi Dimensional Array in C#<\/strong>! Ready to level up with arrays that have rows and columns? Think spreadsheets and grids\u2014this will be fun! \ud83d\ude04<\/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\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"
        Learn Single Dimensional Array in C# with fun examples! This guide covers C# Single Dimensional Array, real-world scenarios, code, outputs, and step-by-step explanations.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":6142,"menu_order":91,"comment_status":"open","ping_status":"closed","template":"","doc_tag":[],"class_list":["post-6150","docs","type-docs","status-publish","hentry","no-post-thumbnail"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/docs\/6150","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=6150"}],"version-history":[{"count":5,"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/docs\/6150\/revisions"}],"predecessor-version":[{"id":8299,"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/docs\/6150\/revisions\/8299"}],"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=6150"}],"wp:term":[{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/www.completecsharptutorial.com\/wp-json\/wp\/v2\/doc_tag?post=6150"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}