跟读练习: Useful math related functions in C++ 🔢 - 通过YouTube学习英语口语
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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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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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为什么通过这个视频练习口语？
通过观看这个视频并练习相关的数学函数，您不仅可以提高您的编程技能，还能提升您的英语口语表达能力。视频中所使用的简洁示例使您可以在效果明显的情况下，跟随讲解进行英语口语练习。这样的学习方法能帮助您在真实语境中应用新学的词汇和句型，从而在日常交流或雅思口语练习中表现得更加自信。
语法与表达结构分析
- 最大值与最小值函数: 视频中提到的“max”和“min”函数使用了比较的结构。例如，当说“比较 x 和 y”时，您不仅能学习到数学概念，同时也能练习如何在英语中进行比较。
- 幂和平方根: 函数“pow”和“sqrt”的介绍中，提供了如何用英语描述操作的方式。例如，“将2的3次方”可以帮助您掌握如何在描述数学运算时使用英语表达。
- 绝对值的理解: 在解说绝对值时，使用了“If you place a negative number within the absolute value function”这样的句型。这种条件句型的应用，对于提高理解和运用复杂句子结构有很大帮助。
常见的发音陷阱
在视频中，某些数学术语可能会给非母语者带来发音挑战。例如，“absolute value”这个短语中，"absolute"的发音可能会有些困难，尤其是在快节奏的对话中，容易变得模糊。练习这些术语的同时，您还可以运用“shadow speech”技巧，将其与视频中的讲解进行对比，帮助提高语音的清晰度。
此外，发音相近的单词，如“ceiling”和“sealing”，也常让学习者混淆。通过反复模仿和跟读，您能够有效地提高英语发音。
结合以上内容，通过观看这个视频并进行口语练习，您将能有效提升自己的英语口语能力。无论是在学术交流还是日常对话中，您都能够更自信地表达自我，达到更高的英语水平。
什么是跟读法？
跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。