//构造一个复数 C->RealPart = x; C->ImagePart = y; } Complex Add(Complex C1, Complex C2) { //求两个复数C1和C2的和sum Complex sum; sum.RealPart=C1.RealPart+C2.RealPart; sum.ImagePart=C1.ImagePart+C2.ImagePart; return sum; } Complex Sub(Complex C1, Complex C2) { //求两个复...