跟讀練習: Useful math related functions in C++ 🔢 - 通過影片學習英語口語
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Hey guys, in this video I'm going to show you 8 useful math related functions in C++.
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Let's begin by creating 3 variables.
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Double x, and I will set this to be 3.
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Double y, that will be 4.
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Then double z, we will declare this but not yet assign it.
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The first useful math related function is the max function, which will return the greater of 2 values or variables.
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I'll assign the result within z.
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z equals standard max parentheses.
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Within the parentheses, add two values or variables.
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I'll compare x and y.
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Then let's display the result.
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Standard output, I would like to display whatever z is.
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The greater number between 3 and 4 is, well, you guessed it, 4.
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Alternatively, there's the min function.
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z equals standard min let's compare x then y
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so the minimum between these two values would be three
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so that's max
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and min now the rest of these functions are found within
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the cmath header file at the top of our file let's
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include cmath we have the pow function to raise a base to a given power.
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z equals pow, or power.
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Let's raise two to the power of three.
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z would be eight.
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Two to the power of four would be 16.
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That's the power function.
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Then we have square root z equals sqrt.
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What's the square root of nine?
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Well, the square root of nine is three.
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Then we have absolute value z equals abs.
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If you place a negative number within the absolute value function, it will give you the positive version of that number, how far it is away from zero.
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So negative three, the absolute value of negative three would be three.
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That is the absolute value function.
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Next, we have the round function.
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Let's change X to 3.14.
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Z equals round.
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Let's round X.
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3.14 rounded would be three.
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If you need to round up, there's a ceiling function.
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Z equals seal.
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Seal means ceiling.
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Let's round X.
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X rounded up is 4.
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Alternatively, there's the floor function, which will always round down.
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Let's change X to 3.99 to test it.
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Z equals floor X.
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X rounded down is three.
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So yeah, everybody, that is a super quick video on a few useful math-related functions.
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If you head to this URL, c++.com slash reference slash cmath, there's a lot more useful math functions that you may be interested in,
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but we just covered a few of the basics.
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In the next topic, we're going to create a practice program to find the hypotenuse of a right triangle.
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So yeah, those are a few useful math-related functions in C++.
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Thank you.
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為什麼通過這個影片練習口語？
通過觀看這個影片並練習相關的數學函式，您不僅可以提高您的程式設計技能，還能提升您的英語口語表達能力。影片中所使用的簡潔示例使您可以在效果明顯的情況下，跟隨講解進行英語口語練習。這樣的學習方法能幫助您在真實語境中應用新學的詞彙和句型，從而在日常交流或雅思口語練習中表現得更加自信。
語法與表達結構分析
- 最大值與最小值函式: 影片中提到的“max”和“min”函式使用了比較的結構。例如，當說“比較 x 和 y”時，您不僅能學習到數學概念，同時也能練習如何在英語中進行比較。
- 冪和平方根: 函式“pow”和“sqrt”的介紹中，提供瞭如何用英語描述操作的方式。例如，“將2的3次方”可以幫助您掌握如何在描述數學運算時使用英語表達。
- 絕對值的理解: 在解說絕對值時，使用了“If you place a negative number within the absolute value function”這樣的句型。這種條件句型的應用，對於提高理解和運用複雜句子結構有很大幫助。
常見的發音陷阱
在影片中，某些數學術語可能會給非母語者帶來發音挑戰。例如，“absolute value”這個短語中，"absolute"的發音可能會有些困難，尤其是在快節奏的對話中，容易變得模糊。練習這些術語的同時，您還可以運用“shadow speech”技巧，將其與影片中的講解進行對比，幫助提高語音的清晰度。
此外，發音相近的單詞，如“ceiling”和“sealing”，也常讓學習者混淆。通過反覆模仿和跟讀，您能夠有效地提高英語發音。
結合以上內容，通過觀看這個影片並進行口語練習，您將能有效提升自己的英語口語能力。無論是在學術交流還是日常對話中，您都能夠更自信地表達自我，達到更高的英語水平。
什麼是跟讀法？
跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。