VC下使用復數示例（建議使用“用法一”）用法一#include math.h>#include complex>using namespace std;typedef complexdouble> Complex;int main(int argc, char* argv[]){Complex a,b,c;a = Complex::complex(1.,.2);		//賦初值printf(%f,%fn,real(a),imag(a));	//real()取實部,imag()取虛部b = Complex::complex(1.,.2);		//賦初值c = Complex::complex(1.,.2);		//賦初值a = b + c;printf(%f,%fn,real(a),imag(a));double k=2.0;	//數乘的時候數的類型一定要和復數中

實部和虛部的類型相同，此處為doublea = k * a;	//所有需要和復數運算的實數都要定義為和實部虛部類型相同printf(%f,%fn,real(a),imag(a));return 0;}******************************************************************用法二#include math.h>#include complex>int main(int argc, char* argv[]){std::complexdouble> x,y,z;x = std::complexdouble> (1.,.02);printf(x = %f,j%fn,std::real(x),std::imag(x));y = std::complexdouble> (1.,.02);z = std::complexdouble> (1.,.02);x = y * z;printf(x = %f,j%fn,std::real(x),std::imag(x));return 0;}******************************************************************用法三#include math.h>int main(int argc, char* argv[]){_complex c_val1,c_val2,c_val3;c_val1.x = 1.;c_val1.y = .2;c_val2.x = 1.;c_val2.y = .2;c_val3.x = c_val1.x + c_val2.x;c_val3.y = c_val1.y + c_val2.y;printf(sum = %f,j%fn,c_val3.x,c_val3.y);return 0;}