http://jackxiang.com/index.php zh-cn http://jackxiang.com/post// jack <xdy108@126.com> Thu, 04 Aug 2011 02:16:55 +0000 http://jackxiang.com/post// #include "stdio.h" #include "iostream" void fun(char a[10]); using namespace std; int main() {      char a[10]={"jackxiang"};      cout << "From main function:\n";      cout << sizeof(a)<<endl;      cout << a << endl;      fun(a); } void fun(char a[10]) {      cout << "From fun function:\n";      cout << sizeof(a)<<endl;      cout << a << endl; }

输出：
From main function:
10
jackxiang
From fun function:
4
jackxiang

此例说明：在函数中，数组参数退化为指针，所以函数fun中的sizeof(a)的内容永远输出为4。 ]]> http://jackxiang.com/post//#blogcomment <user@domain.com> Thu, 01 Jan 1970 00:00:00 +0000 http://jackxiang.com/post//#blogcomment