最近老是用到C、C++文本读写的问题，自己老是记不住怎么写，今天写在博客中，记录一下。

C读写文本文档：

Read：

    char Buf[1024];
	char *fname = "D:\\CTC\\Driver\\EtherCAT\\Address.cfg";
	FILE *FilePointer;
	if ((FilePointer = fopen(fname, "r")) == NULL){
		printf("Can't Open File!\n");
		return;
	}
	//while (Read_Line_From_File(FilePointer, b))
	while (fgets(Buf, 1024, FilePointer) != NULL)
	{
		char *B = strtok(Buf, " ");
		Adress[Num] = atoi(B);
		B = strtok(NULL, " ");
		Name[Num] = atoi(B);
		B = strtok(NULL, " ");
		Rule[Num] = atoi(B);
		printf("%d,%d,%d\n", Adress[Num], Name[Num], Rule[Num]);
		if (Name[Num] == 0 || Adress[Num] == 0)
		{
			continue;
		}
		Num++;
	}
	fclose(FilePointer);

Write：

    FILE *fpWrite=fopen("data.txt","w");  
    if(fpWrite==NULL)  
    {  
        return 0;  
    }  
    for(int i=0;i<10;i++)  
        fprintf(fpWrite,"%d ",i);  
    fclose(fpWrite); 

C++读写文本文档，我只写出我认为比较简单的方法：

Read：

#include "stdafx.h"
#include <iostream>
#include <fstream>
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
	char S[1024];
	ifstream fin;
	fin.open("E:\\data.txt");
	if(!fin) return 0;
	while (!fin.eof())
	{
		fin.getline(S,1024);
		cout<<S<<endl;
	}
	fin.close();
	getchar();
	return 0;
}

Write：

#include "stdafx.h"
#include <iostream>
#include <fstream>
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
	ofstream fout;
	fout.open("E:\\data.txt");
	fout<<"1111"<<"         "<<endl;
	fout.flush();
	fout.close();
	return 0;
}