class template(模板)首次试用

Posted 2020-11-25 zmachine

#include <iostream> 
using namespace std;
template<typename T>
class complex{
    public:complex(T r=0,T i=0)
            :re(r),im(i)
            {}
           T real() const{return re;}//函数中const表示不改变函数内各值的内容，只是简单的将值取出
           T imag() const{return im;}
        
    private:
        T re,im;
};
int main()
{
    complex<int> c1(2,1);
    complex<double> c2(2.5,1.2);
    cout<<c1.real()<<endl;
    cout<<c2.real()<<endl; 
    return 0;
}