How do I count all the lines of code in all headers and source files in a folder? *.cpp *.h

Question

Say I have a project folder containing a number of header and source files for c++; How would I count the total number of lines of all of these?

Answer 1

The wc command with option -l prints the line count of each file and a total if multiple files are given as input.

Say I have two files foo.cpp and bar.h with 10 lines each, then wc -l gives this result:

$ wc -l *.cpp *.h
10 foo.cpp
10 bar.h
20 total

If you only need the total value, you could cat the files and pipe the result to wc -l:

$ cat *.cpp *.h | wc -l
20