Problem E: 类模板Sample

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Problem E: 类模板Sample

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 690  Solved: 620
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Description

定义类模板Sample，设模板参数为T，则Sample类只有一个T类型的属性。定义其构造函数、拷贝构造函数，输出与样例类似的信息。定义show函数，用于显示属性值（只输出属性值）。定义add函数，将当前对象与Sample类的另一个对象的属性值相加，和仍存入当前对象。

Input

输入2个int类型整数、2个double类型实数。

Output

见样例。

Sample Input

121.63.356

Sample Output

Sample 1 is created.Sample 2 is created.Sample 1 is copied.Sample 1.6 is created.Sample 3.356 is created.Sample 3.356 is copied.Sample 2 is copied.3Sample 1.6 is copied.4.956

HINT

Append Code

append.cc,

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#include <iostream>#include <iomanip>#include <cstring>#include <cmath>using namespace std;template <class T>class Sample{private:    T t;public:    Sample(T tt) : t(tt){ cout << "Sample " << t << " is created." << endl; }    Sample(const Sample & s):t(s.t) { cout << "Sample " << t << " is copied." << endl;}    ~Sample() { }public:    void show()const{ cout << t << endl; }    void add(Sample s){ t += s.t; }};  int main(){    int a, b;    double c, d;    cin>>a>>b>>c>>d;    Sample<int> s1(a), s2(b), s3(s1);    Sample<double> s4(c), s5(d), s6(s5);    s1.add(s2);    s1.show();    s5.add(s4);    s5.show();    return 0;}