#include
      
       using namespace std;class square{    public:        square(int x1,int y1);  //x1，x2为自定义长宽        int getchang() {
    return x;} //用于输出长         int getkuan() {
    return y;} //输出宽         int getmianji() {
    return z;}//输出面积     private:     int x;     int y;     int z; };square::square(int x1,int y1) {    x=x1;y=y1;z=(x*y);  //使用输入的自定义值赋值 }int main(){    int e,f;    cout<<"请输入自定义长方形的长与宽：";    cin>>e>>f;    square a1(e,f);    cout<<"自定义长，宽为:"<
       
        <<","<
        
         <
        
       
      

 

 

 

 

 

#include
      
       using namespace std;class Complex{    public:        Complex(double r0,double i0);         Complex(double r0);        Complex(const Complex &c);        ~Complex(){}        void add(Complex &c0);         void show(){cout<
       
        <<'+'<
        
         <<'i'<