C++写功能代码C#写界面的英汉词典

这是C++写的功能代码

这是file.h头文件，代码如下：

extern  "C" __declspec(dllexport)  void __stdcall Add(char **s,char* c);
extern  "C" __declspec(dllexport)  void __stdcall txtReader(char **s,char* word);
extern  "C" __declspec(dllexport)  void __stdcall deleteword(char **s,char* word);

这是fun.h的文件及代码：

#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <string>

using namespace std;

ofstream outfile("D:\\text.txt");//定义一个文件输出流对象

void fun(string s)
{
	outfile<<s<<endl;
}

这是CPPDome.cpp源文件，代码如下：

// CSharpInvokeCPP.CPPDemo.cpp : 定义 DLL 应用程序的导出函数。
//

#include "stdafx.h"
#include "fun.h"
#include "file.h"
#ifdef _MANAGED
#pragma managed(push, off)
#endif
#include <string>
#include <stdio.h>   
#include <fstream>
#include <stdlib.h>   
#include <conio.h>   
#include <string.h>  
#include <windows.h>

string Binary_delete(string a,string b[1000][2],int begin,int end)//折半查找功能函数
{
	int k = end;
	while(true)
	{
		if(a==b[k][0])
				return "删除成功!";
		else if((begin==end-1)&&a!=b[(begin+end)/2][0])
			return "单词不存在";
		else if(a>b[(begin+end)/2][0])
			begin=(begin+end)/2;
		else if(a<b[(begin+end)/2][0])
			end=(begin+end)/2;
		else{
			begin = (begin+end)/2;
				for(;begin<=k;begin++){
					b[begin][0]=b[begin+1][0];b[begin][1]=b[begin+1][1];
				}
			return "删除成功";
		}
	}
}

string insertWord(string a,string c,string b[1000][2],int begin,int end,int judge)
{
	int i;
	if(judge==1){b[end+1][0]=a;b[end+1][1]=c;}
	else if(judge==0){
		for(int e=end;e>=0;e--){
			b[e+1][0]=b[e][0];b[e+1][1]=b[e][1];
		}b[0][0]=a;b[0][1]=c;
	}else{
		for(i=end;i>begin;i--)
		{
			b[i+1][0] = b[i][0];
			b[i+1][1] = b[i][1];
		}
		b[i+1][0] = a;
		b[i+1][1] = c;
	}
	return "插入成功！";
}

string Binary_search(string a,string b[1000][2],int begin,int end)//折半查找功能函数
{
	while(true)
	{
		if((begin==end-1)&&a!=b[(begin+end)/2][0])
			return "no result";
		else if(a>b[(begin+end)/2][0])
			begin=(begin+end)/2;
		else if(a<b[(begin+end)/2][0])
			end=(begin+end)/2;
		else
			return b[(begin+end)/2][1];
	}
}

string Binary_add(string a,string c,string b[1000][2],int begin,int end)//折半查找功能函数
{
	int k = end;
	while(true)
	{
		if((begin==end-1)&&a!=b[(begin+end)/2][0])
		{
			if(a<b[0][0])
				return insertWord(a,c,b,begin,k,0);
			else if(a>b[k][0])
				return insertWord(a,c,b,begin,k,1);
			else
				return insertWord(a,c,b,begin,k,2);
		}
		else if(a>b[(begin+end)/2][0])
			begin=(begin+end)/2;
		else if(a<b[(begin+end)/2][0])
			end=(begin+end)/2;
		else
			return "单词已存在，插入失败";
	}
}

void __stdcall Add(char **s,char* word)
{
 	char firstletter = word[0];
	int m = 0;
	int p;
	for(p=0;p<50;p++)
	{
		if(word[p]=='\0') break;
		if(word[p]==' ') m=p;
	}
	string insertword(word);
	string insertwords = insertword.substr(0,m);
	string insertchinese = insertword.substr(m+1,p);
	string path;
	switch(firstletter)//确定要打开的文件的路径
	{
		case'a':path = "lib/a.txt";break;
		case'b':path = "lib/b.txt";break;
		case'c':path = "lib/c.txt";break;
		case'd':path = "lib/d.txt";break;
		case'e':path = "lib/e.txt";break;
		case'f':path = "lib/f.txt";break;
		case'g':path = "lib/g.txt";break;
		case'h':path = "lib/h.txt";break;
		case'i':path = "lib/i.txt";break;
		case'j':path = "lib/j.txt";break;
		case'k':path = "lib/k.txt";break;
		case'l':path = "lib/l.txt";break;
		case'm':path = "lib/m.txt";break;
		case'n':path = "lib/n.txt";break;
		case'o':path = "lib/o.txt";break;
		case'p':path = "lib/p.txt";break;
		case'q':path = "lib/q.txt";break;
		case'r':path = "lib/r.txt";break;
		case's':path = "lib/s.txt";break;
		case't':path = "lib/t.txt";break;
		case'u':path = "lib/u.txt";break;
		case'v':path = "lib/v.txt";break;
		case'w':path = "lib/w.txt";break;
		case'x':path = "lib/x.txt";break;
		case'y':path = "lib/y.txt";break;
		case'z':path = "lib/z.txt";break;
		case'A':path = "lib/a.txt";break;
		case'B':path = "lib/b.txt";break;
		case'C':path = "lib/c.txt";break;
		case'D':path = "lib/d.txt";break;
		case'E':path = "lib/e.txt";break;
		case'F':path = "lib/f.txt";break;
		case'G':path = "lib/g.txt";break;
		case'H':path = "lib/h.txt";break;
		case'I':path = "lib/i.txt";break;
		case'J':path = "lib/j.txt";break;
		case'K':path = "lib/k.txt";break;
		case'L':path = "lib/l.txt";break;
		case'M':path = "lib/m.txt";break;
		case'N':path = "lib/n.txt";break;
		case'O':path = "lib/o.txt";break;
		case'P':path = "lib/p.txt";break;
		case'Q':path = "lib/q.txt";break;
		case'R':path = "lib/r.txt";break;
		case'S':path = "lib/s.txt";break;
		case'T':path = "lib/t.txt";break;
		case'U':path = "lib/u.txt";break;
		case'V':path = "lib/v.txt";break;
		case'W':path = "lib/w.txt";break;
		case'X':path = "lib/x.txt";break;
		case'Y':path = "lib/y.txt";break;
		case'Z':path = "lib/z.txt";break;
	}
	ifstream infile(path);//以输入方式打开文件
	string words[1000][2];//定义一个二维数组存储信息
	char ch[50];//定义一个字符数组用来存储从txt文件中读取的信息
	int counterNum;//定义一个计数器
	for(counterNum=0;!infile.eof();counterNum++)//从文件内读取数据存到一个string数组中
	{
		int k=0;
		infile.getline(ch,50);
		int i;
		for(i=0;i<50;i++)
		{
			if(ch[i]=='\0')
				break;
			if(ch[i]==' ')
				k=i;
		}
		string judgeword(ch);
		if(judgeword.length()!=0){
		words[counterNum][0] = judgeword.substr(0,k);
		words[counterNum][1] = judgeword.substr(k+1,i);}
	}
	infile.close();//关闭文件
	/*
	*此处为二分插入的功能代码
	**/
	string biword = Binary_add(insertwords,insertchinese,words,0,counterNum-1);
	ofstream outfile(path);//以输出方式打开文件
	if(biword=="插入成功！") counterNum++;
	for(int line=0;line<counterNum;line++)
	{
		if(line==counterNum-1)
			outfile<<words[line][0]<<" "<<words[line][1];//想文件内输入信息
		else
			outfile<<words[line][0]<<" "<<words[line][1]<<endl;
	}
	outfile.close();//关闭文件
	char* st = new char[50];
	char *a = &biword[0];
	strcpy(st,a);
	*s=st;
}

void __stdcall txtReader(char **s,char* word)
{
	char firstletter = word[0];
	string insertword(word);
	string path;
	switch(firstletter)//确定要打开的文件的路径
	{
		case'a':path = "lib/a.txt";break;
		case'b':path = "lib/b.txt";break;
		case'c':path = "lib/c.txt";break;
		case'd':path = "lib/d.txt";break;
		case'e':path = "lib/e.txt";break;
		case'f':path = "lib/f.txt";break;
		case'g':path = "lib/g.txt";break;
		case'h':path = "lib/h.txt";break;
		case'i':path = "lib/i.txt";break;
		case'j':path = "lib/j.txt";break;
		case'k':path = "lib/k.txt";break;
		case'l':path = "lib/l.txt";break;
		case'm':path = "lib/m.txt";break;
		case'n':path = "lib/n.txt";break;
		case'o':path = "lib/o.txt";break;
		case'p':path = "lib/p.txt";break;
		case'q':path = "lib/q.txt";break;
		case'r':path = "lib/r.txt";break;
		case's':path = "lib/s.txt";break;
		case't':path = "lib/t.txt";break;
		case'u':path = "lib/u.txt";break;
		case'v':path = "lib/v.txt";break;
		case'w':path = "lib/w.txt";break;
		case'x':path = "lib/x.txt";break;
		case'y':path = "lib/y.txt";break;
		case'z':path = "lib/z.txt";break;
		case'A':path = "lib/a.txt";break;
		case'B':path = "lib/b.txt";break;
		case'C':path = "lib/c.txt";break;
		case'D':path = "lib/d.txt";break;
		case'E':path = "lib/e.txt";break;
		case'F':path = "lib/f.txt";break;
		case'G':path = "lib/g.txt";break;
		case'H':path = "lib/h.txt";break;
		case'I':path = "lib/i.txt";break;
		case'J':path = "lib/j.txt";break;
		case'K':path = "lib/k.txt";break;
		case'L':path = "lib/l.txt";break;
		case'M':path = "lib/m.txt";break;
		case'N':path = "lib/n.txt";break;
		case'O':path = "lib/o.txt";break;
		case'P':path = "lib/p.txt";break;
		case'Q':path = "lib/q.txt";break;
		case'R':path = "lib/r.txt";break;
		case'S':path = "lib/s.txt";break;
		case'T':path = "lib/t.txt";break;
		case'U':path = "lib/u.txt";break;
		case'V':path = "lib/v.txt";break;
		case'W':path = "lib/w.txt";break;
		case'X':path = "lib/x.txt";break;
		case'Y':path = "lib/y.txt";break;
		case'Z':path = "lib/z.txt";break;
	}
	ifstream infile(path);//以输入方式打开文件
	string words[1000][2];//定义一个二维数组存储信息
	char ch[50];//定义一个字符数组用来存储从txt文件中读取的信息
	int counterNum=0;//定义一个计数器
	for(counterNum=0;!infile.eof();counterNum++)//从文件内读取数据存到一个string数组中
	{
		int k=0;
		infile.getline(ch,50);
		int i;
		for(i=0;i<50;i++)
		{
			if(ch[i]=='\0')
				break;
			if(ch[i]==' ')
				k=i;
		}
		string judgeword(ch);
		if(judgeword.length()!=0){
		words[counterNum][0] = judgeword.substr(0,k);
		words[counterNum][1] = judgeword.substr(k+1,i);}
	}
	infile.close();//关闭文件
	/*
	*此处为二分查找的功能代码
	**/
	string biword = Binary_search(insertword,words,0,counterNum);
	char* st = new char[50];
	char *a = &biword[0];
	strcpy(st,a);
	*s=st;
}

void __stdcall deleteword(char **s,char *word)
{
	char firstletter = word[0];
	int m = 0;
	int p;
	for(p=0;p<50;p++)
	{
		if(word[p]=='\0') break;
		if(word[p]==' ') m=p;
	}
	string insertword(word);
	string path;
	switch(firstletter)//确定要打开的文件的路径
	{
		case'a':path = "lib/a.txt";break;
		case'b':path = "lib/b.txt";break;
		case'c':path = "lib/c.txt";break;
		case'd':path = "lib/d.txt";break;
		case'e':path = "lib/e.txt";break;
		case'f':path = "lib/f.txt";break;
		case'g':path = "lib/g.txt";break;
		case'h':path = "lib/h.txt";break;
		case'i':path = "lib/i.txt";break;
		case'j':path = "lib/j.txt";break;
		case'k':path = "lib/k.txt";break;
		case'l':path = "lib/l.txt";break;
		case'm':path = "lib/m.txt";break;
		case'n':path = "lib/n.txt";break;
		case'o':path = "lib/o.txt";break;
		case'p':path = "lib/p.txt";break;
		case'q':path = "lib/q.txt";break;
		case'r':path = "lib/r.txt";break;
		case's':path = "lib/s.txt";break;
		case't':path = "lib/t.txt";break;
		case'u':path = "lib/u.txt";break;
		case'v':path = "lib/v.txt";break;
		case'w':path = "lib/w.txt";break;
		case'x':path = "lib/x.txt";break;
		case'y':path = "lib/y.txt";break;
		case'z':path = "lib/z.txt";break;
		case'A':path = "lib/a.txt";break;
		case'B':path = "lib/b.txt";break;
		case'C':path = "lib/c.txt";break;
		case'D':path = "lib/d.txt";break;
		case'E':path = "lib/e.txt";break;
		case'F':path = "lib/f.txt";break;
		case'G':path = "lib/g.txt";break;
		case'H':path = "lib/h.txt";break;
		case'I':path = "lib/i.txt";break;
		case'J':path = "lib/j.txt";break;
		case'K':path = "lib/k.txt";break;
		case'L':path = "lib/l.txt";break;
		case'M':path = "lib/m.txt";break;
		case'N':path = "lib/n.txt";break;
		case'O':path = "lib/o.txt";break;
		case'P':path = "lib/p.txt";break;
		case'Q':path = "lib/q.txt";break;
		case'R':path = "lib/r.txt";break;
		case'S':path = "lib/s.txt";break;
		case'T':path = "lib/t.txt";break;
		case'U':path = "lib/u.txt";break;
		case'V':path = "lib/v.txt";break;
		case'W':path = "lib/w.txt";break;
		case'X':path = "lib/x.txt";break;
		case'Y':path = "lib/y.txt";break;
		case'Z':path = "lib/z.txt";break;
	}
	ifstream infile(path);//以输入方式打开文件
	string words[1000][2];//定义一个二维数组存储信息
	char ch[50];//定义一个字符数组用来存储从txt文件中读取的信息
	int counterNum;//定义一个计数器
	for(counterNum=0;!infile.eof();counterNum++)//从文件内读取数据存到一个string数组中
	{
		int k=0;
		infile.getline(ch,50);
		int i;
		for(i=0;i<50;i++)
		{
			if(ch[i]=='\0')
				break;
			if(ch[i]==' ')
				k=i;
		}
		string judgeword(ch);
		if(judgeword.length()!=0){
		words[counterNum][0] = judgeword.substr(0,k);
		words[counterNum][1] = judgeword.substr(k+1,i);}
	}
	infile.close();//关闭文件
	/*
	*此处为二分查找并删除的功能代码
	**/
	string biword = Binary_delete(insertword,words,0,counterNum-1);
	ofstream outfile(path);//以输出方式打开文件
	if(biword=="删除成功") counterNum--;
	if(biword=="删除成功!") counterNum=counterNum-1;
	for(int line=0;line<counterNum;line++)
	{
		if(line==counterNum-1)
			outfile<<words[line][0]<<" "<<words[line][1];//向文件内输入信息
		else
			outfile<<words[line][0]<<" "<<words[line][1]<<endl;
	}
	outfile.close();//关闭文件
	char* st = new char[50];
	char *a = &biword[0];
	strcpy(st,a);
	*s=st;
}

这是C#写的界面：

代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace InterFace
{
    public class CPPDLL
    {
        [System.Runtime.InteropServices.DllImport("CSharpInvokeCPP.CPPDemo.dll", CallingConvention = System.Runtime.InteropServices.CallingConvention.StdCall, CharSet = System.Runtime.InteropServices.CharSet.Ansi, EntryPoint = "Add")]
        public static extern void Add(ref IntPtr s, string y);
        [System.Runtime.InteropServices.DllImport("CSharpInvokeCPP.CPPDemo.dll", CallingConvention = System.Runtime.InteropServices.CallingConvention.StdCall, CharSet = System.Runtime.InteropServices.CharSet.Ansi, EntryPoint = "txtReader")]
        public static extern void txtReader(ref IntPtr s, string word);
        [System.Runtime.InteropServices.DllImport("CSharpInvokeCPP.CPPDemo.dll", CallingConvention = System.Runtime.InteropServices.CallingConvention.StdCall, CharSet = System.Runtime.InteropServices.CharSet.Ansi, EntryPoint = "deleteword")]
        public static extern void deleteword(ref IntPtr s, string word);
    }
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)//添加
        {
            try
            {
                string word = textBox1.Text;
                string wordCh = textBox3.Text;
                if (word.Length == 0 || wordCh.Length == 0) MessageBox.Show("输入的中文和英文都不能是空!");
                else
                {
                    word = word + " " + wordCh;
                    IntPtr s = Marshal.StringToHGlobalAnsi("");
                    CPPDLL.Add(ref s, word);
                    string cstr = Marshal.PtrToStringAnsi(s);//得到值
                    textBox2.Text = cstr;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void button2_Click(object sender, EventArgs e)//删除
        {
            try
            {
                string word = textBox1.Text;
                if (word.Length == 0) MessageBox.Show("输入的英文不能是空!");
                else
                {
                    IntPtr s = Marshal.StringToHGlobalAnsi("");
                    CPPDLL.deleteword(ref s, word);
                    string cstr = Marshal.PtrToStringAnsi(s);//得到值
                    textBox2.Text = cstr;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void button3_Click(object sender, EventArgs e)//查找
        {
            try
            {
                string word = textBox1.Text;
                if (textBox1.Text.Length == 0) MessageBox.Show("输入内容不能为空!");
                else
                {
                    IntPtr s = Marshal.StringToHGlobalAnsi("");
                    CPPDLL.txtReader(ref s, word);
                    string cstr = Marshal.PtrToStringAnsi(s);//得到值
                    textBox2.Text = cstr;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
    }
}