从文本文件中读取字符串，再console打印出来

 

 

 

 

当文本文件如下写的时候hello /n world /n希望控制台打印为：helloworld

 

 

 

 

 

#include <iostream.h>#include <stdio.h>#include <afx.h>

void main(){ FILE *fp; fp = fopen("string.txt","a+");  if(fp == NULL) {  cout << "error!" << endl;  return; }

 int i =0; char buff[1024]; CString strTemp;

 char *pBuffBegin, *pBuffEnd; while(fgets(buff, 1024, fp)!=NULL) {   i = strlen(buff);  cout<< buff;  buff[i]   ='//';  buff[i+1] = 'n';  buff[i+2] ='/0';    pBuffEnd = pBuffBegin = buff;

  while (*pBuffEnd != '/0')  {   strTemp.Empty();   if(*pBuffEnd == '//' && *(pBuffEnd + 1) == 'n')   {    if(pBuffBegin == pBuffEnd)    {          cout << "空格" <<endl;         }    else    {     while(pBuffBegin < pBuffEnd)     {      strTemp += *(pBuffBegin++);     }         cout << strTemp << endl;    }     pBuffEnd +=2;    pBuffBegin = pBuffEnd;   }   else   {    pBuffEnd++;   }    }    cout << endl << endl; }   fclose(fp); }

 

 

改良版

 

 

 

// AA.cpp: implementation of the AA class.//#include <iostream.h>#include <stdio.h>#include <afx.h>

void main(){ FILE *fp; fp = fopen("string.txt","a+");  if(fp == NULL) {  cout << "error!" << endl;  return; }

 int ePos =0; char buff[1024]; CString strTemp;

 char  *pBuffEnd; while(fgets(buff, 1024, fp)!=NULL) {   ePos = strlen(buff);  cout<< buff;  buff[ePos]   ='//';  buff[ePos+1] = 'n';  buff[ePos+2] ='/0';    pBuffEnd = buff;

  while (*pBuffEnd != '/0')  {      if(*pBuffEnd == '//' && *(pBuffEnd+1) =='n')   {    if(strTemp.GetLength() != 0)     cout << strTemp << endl;    strTemp.Empty();    pBuffEnd++;   }   else   {    strTemp += *pBuffEnd;   }   pBuffEnd++;  }    cout << endl << endl; }   fclose(fp); }

 

 

改良版

 

 

// AA.cpp: implementation of the AA class.//#include <iostream.h>#include <stdio.h>#include <afx.h>

void main(){ FILE *fp; fp = fopen("string.txt","a+");  if(fp == NULL) {  cout << "error!" << endl;  return; }

 int ePos =0; char buff[1024]; CString strTemp;

 char  *pBuffEnd; while(fgets(buff, 1024, fp)!=NULL) {   ePos = strlen(buff);  cout<< buff;  buff[ePos]   ='//';  buff[ePos+1] = 'n';  buff[ePos+2] ='/0';    pBuffEnd = buff;

  while (*pBuffEnd != '/0')  {      if(*pBuffEnd == '//' && *(pBuffEnd+1) =='n')   {    if(strTemp.GetLength() != 0)     cout << strTemp << endl;    strTemp.Empty();    pBuffEnd++;   }   else   {    strTemp += *pBuffEnd;   }   pBuffEnd++;  }    cout << endl << endl; }   fclose(fp); }