编写函数,以读模式打开一个文件,将内容读到一个vector《string》里面,将每一行为一个元素存到vector里面
#include <iostream>
#include <vector>
#include <fstream>
#include <string>
int main()
{
std::vector<std::string> content;
std::ifstream is("test.txt");
std::string line;
while (std::getline(is, line))
{
content.push_back(line);
}
for (auto line : content)
{
std::cout << line << std::endl;
}
}
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
using namespace std;
int main()
{
ifstream in("main.cpp");
if (!in)
{
cerr << "无法打开输入文件" << endl;
return -1;
}
string line;
vector<string> words;
while (getline(in, line))
{
words.push_back(line);
}
in.close();
for (auto& word : words)
{
cout << word << endl;
}
return 0;
}
书上的代码,我觉得主要是比我多了,判断读文件是否成功了,读完之后记得close