将文件每一行读入到string类型的vector 对应一个元素中

 

C++Primer 习题8.9, P102

书 P254

#include <iostream>
#include <vector>
#include <fstream>
#include <string>
using namespace std;
void main()
{
	string s,filename = "c:/ludashi.txt";
	vector<string> svect;	
	ifstream infile(filename.c_str());
	if(!infile ){
		cerr << "Error opening file";  
		  exit(EXIT_FAILURE);  
	}	
	while(getline(infile,s)){
		   svect.push_back(s);
	}
	infile.close();
	infile.clear();		

	for(vector<string>::iterator it=svect.begin();it!=svect.end();++it)
		cout<<*it<<endl;

}

 

 

出现4个警告warnings ,搞不清楚怎么回事.

D:\Program Files\Microsoft Visual Studio\MyProjects\标准IO库2\标准IO库2.CPP(31) : warning C4786: 'std::reverse_iterator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const *,std::basic_string<char,std::char_traits<char>,std::a

D:\Program Files\Microsoft Visual Studio\MyProjects\标准IO库2\标准IO库2.CPP(31) : warning C4786: 'std::reverse_iterator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > *,std::basic_string<char,std::char_traits<char>,std::allocat

d:\program files\microsoft visual studio\vc98\include\vector(39) : warning C4786: 'std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >

d:\program files\microsoft visual studio\vc98\include\vector(60) : warning C4786: 'std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >