如何读入一个文本并查找里面的内容？（用标准库）

[hw110]

我用ifstream读入后，怎样查找它读入的文件内容呢，或者怎样把读入的文件流转换为vector<string>对象呢？？才接触标准库不熟悉，谢谢。

[Andy84920]

像楼上的一样!

C++ PRIMER 第六章有详细的文本查询系统.

去下个电子书看看.

有源码的.

[yym314]

ifstream infile("c:\\test.txt", ios::in);
vector<string> words;//保存所有单词

copy( istream_iterator<string>( infile ),
istream_iterator<string>( ),
back_inserter(words) );

[yym314]

#include <fstream>
#include <iterator>
#include <vector>
#include <iostream>

using namespace std;

int main()
{
ifstream infile("d:\\q.txt", ios::in );
vector<string> words;

copy( istream_iterator<string>( infile ),
istream_iterator<string>(),
back_inserter( words ) );

copy( words.begin(), words.end(),
ostream_iterator<string>( cout,"\r\n" ) );

char chEnd;
cin>>chEnd;
return 1;
}

[aflyinghorse]

ifstream infile("c:\\test.txt", ios::in);
vector<string> words;//保存所有单词
string textline;

while ( getline(infile, textline, '\n') )//每次读一行
{
//把每行按空格分为单词
string::size_type pos = 0, prev_pos = 0;
while ( (pos = textline.find_first_of(' ', pos)) != string::npos)
{
words.push_back(textline.substr(prev_pos, pos-prev_pos));
pos++; prev_pos = pos;
}
words.push_back( textline.substr(prev_pos, pos-prev_pos) );
}