File input

For your projects you鈥檒l need to be able to read data from a file. Here鈥檚 a primer on reading data from plain text and CSV files, including CSV values with quoted fields.

Resources

• albums.csv
• CMakeLists.txt
• file_input.pdf
• file_input_code_and_data.zip
• read_albums.cpp
• read_states.cpp
• read_wasteland.cpp
• states.csv
• wasteland.txt

Additional reading

Comprehension check

1. We use a(n) ________________________________________________ object to read from files.
2. True or false? We should never explicitly close our input file(s) when we鈥檙e done reading.
3. A common practice is to use a(n) ______________ loop to iterate through our input file.
4. Two ways of getting data from a file are the ____________________ function and the ___________________ operator.
5. In a CSV file, a field is quoted if it contains ________________ as data.
6. The istream::peek() method will read a character but will not ___________________ it.

Answers: 蕠蓴蓯晒蕠x菨 / s蓯莎莎o蓴 / >> uo岽壥嚿斏惿故噚菨 鈥�()菨u岽塴蕠菨苾::p蕠s / 菨l岽壣ナ� / 菨sl蓯蔁 / 莎蓯菨晒蕠s蔁岽�::p蕠s

Another example

Here鈥檚 another example of file input, in case you find it helpful.

• Book.h
• books.cpp
• books.csv

Copyright 漏 2023鈥�2025 Clayton Cafiero

No generative AI was used in producing this material. This was written the old-fashioned way.