设有如下的类声明：
<code class="hljs cs has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px; word-wrap: normal; background: transparent;">class Test{<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span>: <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">SetData1</span>(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> val) { data1=val; } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> SetData2(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">double</span> val) {data2=val: } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> GetData1() { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> data1; } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">double</span> GetData2() { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> data2; }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span>: <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> data1; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">double</span> data2;}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li></ul>（1）试将此类声明改为类模板声明，使得数据成员data1和data2可以是任何类型。
（2）请为该类增默认构造函数、带两个参数分别对应两个数据成员初值的构造函数，以及复制构造函数。
#include <iostream>using namespace std;template<class T,class S>class Test{public: Test(T a,S b):data1(a),data2(b){} Test(const Test &t) { data1=t.data1; data2=t.data2; } void SetData1(T val) { data1=val; } void SetData2(S val) {data2=val; } T GetData1() { return data1; } S GetData2() { return data2; }private: T data1; S data2;};int main(){ Test<int,double> t1(3,5.5); cout<<t1.GetData1()<<" "; cout<<t1.GetData2()<<endl; t1.SetData1(8); t1.SetData2(8.8); Test<double,int> t2(6.6,4); cout<<t2.GetData1()<<" "; cout<<t2.GetData2()<<endl;; Test<int,double> t3(t1); cout<<t3.GetData1()<<" "; cout<<t3.GetData2()<<endl; return 0;}运行结果：
0 0
