C++读取csv文件&&收获到的知识

#include <iostream>
#include <sstream>
#include <fstream>
#include <string>
#include <vector>

using namespace std;

string Trim(string &str)
{
    //在字符串str中从索引0开始，返回首次不匹配" 	
"的位置(包括空格)
    str.erase(0, str.find_first_not_of(" 	
"));//find_first_not_of:在字符串中搜索与其参数中指定的任何字符都不匹配的第一个字符,""里是所要搜索的总集合.
    str.erase(str.find_last_not_of(" 	
") + 1);        
    return str;
}

int main()
{
    ifstream fin("test.csv");    //打开文件流
    string line;
    while (getline(fin, line))  //"
"区分行,遇到eof终止
    {
        cout << "原始字符串:" << line << endl;
        istringstream sin(line);    
        vector<string> fields;
        string field;
        while (getline(sin, field, ',')) //以逗号为分隔符,如果没有第3个参数,则以'
'作为分隔符.
        {
            fields.push_back(field);
        }
        string name = Trim(fields[0]);
        string age = Trim(fields[1]);
        string birthday = Trim(fields[2]);
        cout << "处理过的字符串:" << name << "	" << age << "	" << birthday << endl;
    }
    return EXIT_SUCCESS;
}