I opened a CSV file in C++ and the headings of the file are Name, Class, Subject, Standing (in same order). I want to output the file on the console in ascending order of Subject (later I will be...

I opened a CSV file in C++ and the headings of the file are Name, Class, Subject, Standing (in same order). I want to output the file on the console in ascending order of Subject (later I will be performing insert sort). how do I make it in ascending order of Subject which is third column. please add code.