Explain the difference between "call by value" and "call by reference" in a programming language.How do these apply to the C language?

分类: 作业答案 • 2022-04-14 19:07:45

问题描述：

答

按值传递参数：参数的值会被复制一份,在被调用函数内对参数做的赋值操作对调用函数来说是不可见的.
按引用传递,在C语言中一般以指针参数体现.对指针指向区域所作的修改对调用函数是可见的.