unsigned shot类型的数组赋值的问题

[bejesus]

有两个unsigned shot类型的数组，想将一个数组的所有内容复制到另外一个数组中（不想用for循环之类的），有没有如strcpy之类的方法？ 或用memset?

[kunp]

memcpy就可以了。看看例子：

#include <iostream>
using namespace std;

int main()
{
unsigned short s1[] = { 2, 3, 4, 5, 6, 7};
unsigned short s2[] = { 1, 1, 1, 1, 1, 1};

int ix = 0;
cout << "s1:\n";
for(ix = 0; ix < sizeof(s1)/sizeof(unsigned short); ix++)
{
cout << s1[ix] << endl;
}

cout << "s2:\n";
for(ix = 0; ix < sizeof(s1)/sizeof(unsigned short); ix++)
{
cout << s2[ix] << endl;
}

memcpy(s1, s2, sizeof(s1));

cout << "after memcpy" << endl;

cout << "s1:\n";
for(ix = 0; ix < sizeof(s1)/sizeof(unsigned short); ix++)
{
cout << s1[ix] << endl;
}

cout << "s2:\n";
for(ix = 0; ix < sizeof(s1)/sizeof(unsigned short); ix++)
{
cout << s2[ix] << endl;
}
return 0;
}

[oo]

memcpy

[yanghuajia]

memcpy --linux

[bejesus]

谢谢！我想也是memcpy啦！

但如果这两参数都是unsigned short型数组的指针呢？ 这时有什么办法能知道源数组的大小？

[lifeixiao]

unsigned short a[10],b[100];
int a_len,b_len;
a_len=sizeof(b)/sizeof(unsigned short);
b_len=sizeof(b)/sizeof(unsigned short);