C++的ofstream写文件，文件保存CSV格式

CSV文件内容主要是用逗号分隔的。

文件后缀为csv,文件可以用Excel打开，方便查阅。 

#include<fstream>//头文件

std::string csvPath=szDir + "\\output.csv";
std::ofstream csvfile;
csvfile.open(csvPath, std::ios::out);
if (!csvfile)
{
    //文件打开失败
	return;
}
//csv文件输出
csvfile <<"image name" << ","<<"属性1"<<","<< "属性2" << "," << "属性3" << "," << "属性4" << "\n";
csvfile.close();