How to read a .gz file line-by-line in C++?

Question

I have 3 terabyte .gz file and want to read its uncompressed content line-by-line in a C++ program. As the file is quite huge, I want to avoid loading it completely in memor

Answer 1

For something that is going to be used regularly, you probably want to use one of the previous suggestions. Alternatively, you can do

gzcat file.gz | yourprogram

and have yourprogram read from cin. This will decompress parts of the file in memory as it is needed, and send the uncompressed output to yourprogram.