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周超强 廊坊师范学院信息技术提高班第十期

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按值和按地址传递的区别  

2013-02-16 17:36:51|  分类: VB学习 |  标签: |举报 |字号 订阅

  下载LOFTER 我的照片书  |

参数传递时过程使用中非常重要的问题,通过实际参数和形式参数的传递可以实现调用过程和被调用过程之间的信息交换。

VB中的参数传递有两种方式:按值传递和按地址传递。与两种方式相对应,声明通用过程。

 

格式为:Byval\Byref  变量名 ()as 类型

 

两者的区别是:

就好比是你同学向你借了份试卷,如果是按值传递的意思就是,你同学把你的试卷复制了一份,然后在上面做修改阃О涯愕氖跃砀粗屏 class="bd ima mjont>

o4>两者的>( ><1逗 m一份,然后在上面赚然后在上面做修改阃О涯愕氖跃砀粗I你的试卷 ima mjont>o4>两-family:) im6" style="li ><就相当于在面赚那张然后上直接做了氖跃。最后面赚那张然后就会受到nt><(即-family:)>中的参数传递有两种方式:八一份,然后在上面做修改阃О涯愕氖跃砀粗屏 c例子font siz藅yl是按值传递的意思就是,你同学把你的试卷复制了一份,然后在上面做修改阃О涯愕氖跃砀粗屏 cPrirc=e Sub C//z> Prifon"ang= <> 

<’最后nt-family: SimSun;" > t 90(x)yl是按值传递的意思就是,你同学把你的试卷复制了一份,然后在上面做修改阃О涯愕氖跃砀粗屏 c獭> Prifon"ang= <> 

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格式

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