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hELLO ยท Designed By ์ •์ƒ์šฐ.
Rainbow๐ŸŒˆCoder

My dev Note๐Ÿ“’

C#/์ด๊ฒƒ์ด C#์ด๋‹ค

47. ๋ฐฐ์—ด์“ฐ๋Š” ์ด์œ , ๋ฐฐ์—ด ์ดˆ๊ธฐํ™” ๋ฐฉ๋ฒ• 3๊ฐ€์ง€

2022. 2. 24. 14:29
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๋ณ€์ˆ˜๋ฅผ ๋ช…ํ•จ์ด๋ผ๊ณ  ํ•œ๋‹ค๋ฉด,

๋ฐฐ์—ด์ด๋‚˜ ์ปฌ๋ ‰์…˜์€ ๋ช…ํ•จ์ง‘์ด๋ผ๊ณ  ํ•  ์ˆ˜ ์žˆ๋‹ค!

 

๋ช…ํ•จ์ง‘์ด ์˜์—… ์‚ฌ์›์˜ ๋ช…ํ•จ ๊ด€๋ฆฌ ๊ณ ๋ฏผ์„ ๋œ์–ด์ฃผ๋Š” ๊ฒƒ์ฒ˜๋Ÿผ ๋ฐฐ์—ด๊ณผ ์ปฌ๋ ‰์…˜์€ ํ”„๋กœ๊ทธ๋ž˜๋จธ์˜ ๋ฐ์ดํ„ฐ ๊ด€๋ฆฌ ๊ณ ๋ฏผ์„ ๋œ์–ด์ค€๋‹ค.

๋ณ€์ˆ˜๋ฅผ 300๊ฐœ ์„ ์–ธํ•˜์ง€ ๋ง๊ณ 

300๊ฐœ์˜ ์šฉ๋Ÿ‰์„ ๊ฐ€์ง„ ๋ณ€์ˆ˜๋ฅผ 1๊ฐœ๋งŒ ์„ ์–ธํ•˜๋„๋ก ํ•˜์ž.

 

๋ฐ์ดํ„ฐํ˜•์‹[] ๋ฐฐ์—ด ์ด๋ฆ„ = new ๋ฐ์ดํ„ฐํ˜•์‹[์šฉ๋Ÿ‰];

 

๊ฐ™์€ ์„ฑ๊ฒฉ์˜ ๋ฐ์ดํ„ฐ๋ผ๋ฉด ๋ณ€์ˆ˜๋ฅผ ์‚ฌ์šฉํ•˜๋Š” ๊ฒƒ๋ณด๋‹ค ๋ฐฐ์—ด๋กœ ์ •์˜ํ•œ ๋‹ค์Œ for๋ฌธ์ด๋‚˜ foreach๋ฌธ๊ณผ ํ•จ๊ป˜ ์‚ฌ์šฉํ•˜๋Š” ๊ฒƒ์ด ์ฝ”๋“œ๋ฅผ ํ›จ์”ฌ ๋” ๊ฐ„๊ฒฐํ•˜๊ฒŒ ๋งŒ๋“ค ์ˆ˜ ์žˆ๋‹ค.

    class MainApp
    {
        static void Main(string[] args)
        {
            float[] tests = new float[5];
            tests[0] = 75;
            tests[1] = 69;
            tests[2] = 100;
            tests[3] = 99;
            tests[4] = 85;
            float sum = 0;
            foreach (var num in tests)
            {
                sum += num;
            }
            float average = sum / tests.Length;
            Console.WriteLine(average);
    }

๋ฐฐ์—ด ์ธ๋ฑ์Šค๊ฐ€ 0์œผ๋กœ ์‹œ์ž‘ํ•˜๋‹ˆ๊นŒ ์ฒซ ๋ฒˆ์งธ ์š”์†Œ๋ฅผ ๊ธฐ์ค€์œผ๋กœ ์ ‘๊ทผํ•  ๋•Œ๋Š” ํฐ ๋ถˆํŽธ์ด ์—†์ง€๋งŒ,

๋งˆ์ง€๋ง‰ ์š”์†Œ๋ฅผ ๊ธฐ์ค€์œผ๋กœ ์ ‘๊ทผํ•˜๊ณ  ์‹ถ์„ ๋•Œ๋Š” ์•ฝ๊ฐ„์˜ ํŠธ๋ฆญ์ด ํ•„์š”ํ•˜๋‹ค.

๊ฐ€๋ น ๊ธธ์ด๊ฐ€ 5์ธ ๋ฐฐ์—ด์˜ ๋งˆ์ง€๋ง‰ ์š”์†Œ์— ์ ‘๊ทผํ•˜๋ ค๋ฉด '๋ฐฐ์—ด์˜ ๊ธธ์ด'๋ฅผ ๋จผ์ € ์•Œ์•„๋‚ด๊ณ , ๊ฑฐ๊ธฐ์„œ 1์„ ๋นผ์•ผํ•œ๋‹ค.

 

int[] scores = new int[5];

scores[scores.Length-1] = 34; //scores[4]=34;์™€ ๋™์ผ

 

<๋ฐฐ์—ด ์ดˆ๊ธฐํ™” ๋ฐฉ๋ฒ•>

(1)             string[] array1 = new string[3] { "๋‹น์‹ ์€", "๋ฐ”๋ณด๋‹ค", "๋ฐ”๋ณด!" }; //๋ฐฐ์—ด์˜ ์šฉ๋Ÿ‰์„ ๋ช…์‹œ

(2)            string[] array1 = new string[] { "๋‹น์‹ ์€", "๋ฐ”๋ณด๋‹ค", "๋ฐ”๋ณด!" };    //๋ฐฐ์—ด์˜ ์šฉ๋Ÿ‰์„ ์ƒ๋žต

(3)            string[] array1 = { "๋‹น์‹ ์€", "๋ฐ”๋ณด๋‹ค", "๋ฐ”๋ณด!" };                    //new์—ฐ์‚ฐ์ž, ๋Œ€๊ด„ํ˜ธ[], ๋ฐฐ์—ด ์šฉ๋Ÿ‰ ๋ชจ๋‘ ์ƒ๋žต 

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    • 49. Array๋กœ ์•ŒํŒŒ๋ฒณ ์ถœ๋ ฅํ•˜๋Š” ์˜ˆ์ œ
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