value declared

基本解释

The value declared is for customs purposes only.
所标价值仅供海关事宜。
A variable is initialized with an empty text string as its default value when declared.
一个变量会使用一个空白的字符串作为声明时的默认值，来得到初始化。
A property type is declared by an implementation, but its value is declared by a component.
属性类型由实现声明，但其值由组件声明。

> David: At some point in time, I'm going to have to have declared the variable as a float before I can then hand it to printf as the insertion value for that format strength.
>，大卫：在一个特定的时间，我将需要,声明float类型这样的变量,那样我就可以把它打印出来,像是格式化优点的插入值。
哈佛公开课 - 计算机科学课程节选
float So thus far, when we've defined -- declared an int and a float, 2 and so forth, we just put one value in there, the number 2, the number 3.14, just one single value.
至此，当我们定义--声明一个int，和一个，等等，我们只要在那里放置一个值，数字，数字3，14，只有一个值。
哈佛公开课 - 计算机科学课程节选

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