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s1 I have a variable called s1 and it's char * of type char * so here we go.
我有一个变量,它的类型是。
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Last time we checked the type and said if it is a float you're okay. If not, carry on.
并且会告之是否是一个浮点数,如果不是继续循环。
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We can think of it in the same type of way when we're talking about actual reactions happening.
我们在讨论一个真实反应的时候,也可以从这个观点出发来进行分析。
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String is actually not a data type in C. It actually is something called a char star and we'll come back to this before long.
字符串在C语言里其实不是一种数据类型,而是一种称为char，*的数据类型,这个知识点我以后会讲到。
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And the problem is, that we want to build this abstract data type, but we'd like to basically know what kind of object is it, and what functions actually belong to it, how do we use them?
然后我对它们运行了这个方法，就是这一小段代码这个方法,这有意义么？,当然没有了，对不对？,因为你知道，当你把两个极坐标，表示的点进行相加运算的时候？
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And if we type directly into the interpreter, it essentially does an eval and a print.
如果我们直接输入到解释器里面，它本质上会运算然后返回结果。
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Well I need to take that number and I'm going to turn it into a string. So notice what I'm going to do right here. I take that number and convert it into a string. That's an example of that type conversion we did earlier on. By doing that it makes it possible for me to treat it as an ordered sequence of characters.
我可能得把这个数字变为字符串,请注意我这里是怎么做的,我把这个数字,转化为字符串了,这是我们之前学过的,类型转换的例子,这么一来我就能把它按照有序的。
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Let's look at it again. All right it's time to interrupt the world, and we'll just type into the shell.
好，让我们再来看看,好，我们输入shell命令，看结果怎么样。
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No, instead we have to click other amount at bottom right there, when we have to input 4-0-0 in this screen 4-0-0 after consulting visually the little cheat sheet on the device itself it tells you in a very long chart how much one pass costs so we multiply and type in 4-0-0, we hit enter.
不，然而我们必须点击,右下边的这个，当我们需要在这个屏幕上,输入0,通过咨询那个设备上小说明,它在一个很长的图表上,告诉你，每一站需要多少钱，我们加起来,输入了4-0-0，点击输入。
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We did it for silly purposes just to see how big each data type was, but on most systems the size of a char is what?
只是为了很傻的目的,来看看每个数据类型多大，但是在大多数的系统中char的大小是多少呢？
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