Access入门教程16.4函数和子程序
讲了变量 现在也要讲讲 函数 和 子程序 了 像 sin（ ） abs（ ） 这些都是函数都是内部函数 现在我们要来讲讲外部函数 外部函数和变量一样在使用之前也是要先申明 它们的结构如下图所示 函数则会把 a+b c 的值返回给函数名 Getnumber 如果我们输入Getnumber
讲了变量
像
函数则会把
其实子程序和函数很相似
这两种类型的过程都可以接收参数
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