类模板

/* * main.cpp * *  Created on: 2016-10-27 *      Author: llf05 */# include <iostream># include <math.h>//类模板不代表实际的函数，他代表一类类template <class T>class complex{private:T real;T imag;public:complex(T r=0.0, T i=0.0){real = r;imag = i;}T realcomplex();T imagcomplex(){return imag;}T abscomplex(){double t;t = (double)real*real + (double)imag*imag;return sqrt(t);}};//在函数外定义函数的时候，要这样定义template <class T> T complex<T>::realcomplex(){return real;};int main(void){complex<double> s1, s2;return 0;}