数据结构 （抽象数据类型的定义：以复数为例）

# include<stdio.h>
#include<iostream>
#include <iomanip>
using namespace std;
# include<stdlib.h>
typedef struct{
          
   
	float Realpart;//实部
	float Imagepart;//虚部
}Complex;
void Create (Complex &C,float x,float y);//创建复数
float GetReal(Complex C);//求实部
float GetImag(Complex C);//求虚部
Complex Add(Complex C1,Complex C2);//求复数之和
Complex Sub(Complex C1,Complex C2);//求复数之差
int main()
{
          
   
	Complex a,b,sum,sub;
	float x,y,x1,y1;
	cin>>x>>y>>x1>>y1;//输入
	Create(a,x,y);
	Create(b,x1,y1);
//	GetReal(a);
//	GetReal(b);
//	GetImag(a);
//	GetImag(b);
	cout<<a.Realpart <<endl;
	cout<<a.Imagepart <<endl;
	cout<<a.Realpart <<+<<a.Imagepart <<"*i"<<endl;
	cout<<b.Realpart <<endl;
	cout<<b.Imagepart <<endl;
	cout<<b.Realpart <<+<<b.Imagepart <<"*i"<<endl;
	sum=Add(a,b);
	cout<<"两复数智和为："<<sum.Realpart <<+<<sum.Imagepart<<"*i"<<endl;
	sub=Sub(a,b); 
	cout<<"两复数之差为："<<sub.Realpart <<+<<sub.Imagepart <<"*i"<<endl; 
	return 0;
 } 
 void Create (Complex &C,float x,float y)
 {
          
   
 	C.Realpart=x;
 	C.Imagepart=y;
 }
 float GetReal(Complex C)
 {
          
   
 	return C.Realpart;
 }
 float GetImag(Complex C)
 {
          
   
 	return C.Imagepart;
 }
 Complex Add(Complex C1,Complex C2)
 {
          
   
 	Complex sum;
 	sum.Realpart =C1.Realpart +C2.Realpart ;
 	sum.Imagepart =C1.Imagepart +C2.Imagepart ;
 	return sum;
 }
 Complex Sub(Complex C1,Complex C2)
 {
          
   
 	Complex difference;
 	difference.Realpart =C1.Realpart -C2.Realpart ;
 	difference.Imagepart =C1.Imagepart -C2.Imagepart ;
 	return difference;
 }

[Error] variable or field ‘Create’ declared void问题解决 在编写代码过程中出现bug： [Error] variable or field ‘Create’ declared void（变量或字段声明无效）

void Create( &Complex C, float x, float y) 改正：void Create( Complex &C, float x, float y)，以“&”打头的参数即为引用参数，使用方式为 ：变量类型 &具体变量 c++中[Error] cin was not declared in this scope问题解决

原因：缺少
#include<iostream>
using namespace std;

上面程序的运行结果