The program is executed by executing the output file (.exe in Windows) and passing two command-line arguments, namely the CSV filename and column number.
The files are organized (in my case) as shown in the following screenshot:
Run the program using the following command:
./CSV.exe books.csv 1
The executable name might change slightly with different operating systems and different terminal or command prompts. It will also be different if you specify a different name for the output file when compiling.
It shows the following output:
