#include "afx.h"
#include "string"
#include "fstream"
#include <iostream>
using namespace std;
int main()
{
float a[2000];
int i=0,line_num;
fstream file;
file.open(_T("text1.txt"),ios::in);
if (!file)
{
cout<<"cannot open\n";
return 0;
}
string str;
while(getline(file,str))
{
file>>a[i];
i++;
}
line_num=i+1;
file.close();
cout<<line_num<<endl;
for (int j=0;j<line_num;j++)
{
cout<<"a["<<j<<"]="<<a[j]<<endl;
}
return 0;
}
#include <iostream>
#include <fstream>
using namespace std;
int main(void)
{
char txtname[50];
char getCh;
const char BR = char(10); //換行 等價(jià)于 '\n'
unsigned short l = 0;
cout<<"請(qǐng)輸入你要察看的文件名(全稱(chēng)):";
cin>>txtname;
fstream myin(txtname, ios::in | ios::binary);
if(NULL == myin)
{
cout<<"打開(kāi)文件錯(cuò)誤或沒(méi)有該文件,退出。"<<BR;
exit(1);
}
while(myin.get(getCh))
{
if(BR == getCh) l++;
}
myin.close();
cout<<"文件 "<<txtname<<" 有 "<<l<<" 行。"<<endl;
return 0;
}
|
#include "afx.h"
#include "string"
#include "fstream"
using namespace std;
ifstream outfile;
outfile.open(_T("WestPosition.txt"),ios::in);
string s;
int linenum=0;
if (outfile)
{
while (outfile.getline((char *)s.c_str(),16))
{
linenum++;
}
outfile.close();
CString cstr;
cstr.Format(_T("行數(shù)為%d"),linenum);
MessageBox(cstr);
}
else
{
MessageBox(_T("open failed!"));
}
讀取一行文本到rString,遇到回車(chē)換行符停止讀取
CStdioFile::ReadString(LPTSTR lpsz, UINT nMax);
讀取一行文本到緩沖區(qū),遇到“0x0D,0x0A”時(shí)停止讀取,并且去掉硬回車(chē)“0x0D”,保留換行符“0x0A”,在字符串末尾添加“\0”(0x00)。nMax個(gè)字符里包含0x00這個(gè)字符。分析如下:
1)如果nMax <= 字符數(shù),讀取(nMax-1)個(gè)字符 + 0x00
2)如果nMax = 字符數(shù) + 1,讀取nMax個(gè)字符 + 0x00
3)如果nMax > 字符數(shù),讀取nMax個(gè)字符 + 0x0A + 0x00
CStdioFile::ReadString(CString &rString);(重載)
讀取一行文本到rString,遇到回車(chē)換行符停止讀取?;剀?chē)和換行符不讀到rString,而且末尾也沒(méi)有添加“\0”。