How to view program version number ?

I wrote a C program for both Linux and Windows.
I use Git to store versions of the code.
Is there a way to have the program version displayed when I start it ? Can you tell me how to write these lines of code ?

To know the current version of the written code, from bash just write:

Code:

---

git describe --abbrev = 4 --always --tags

---

In your makefile (or some pre-build step), do

Code:

---

echo 'const char *version="'$(git describe --abbrev = 4 --always --tags)'";"' > version_info.c

---

Then compile and link with that file, with an 'extern const char *version;' and 'printf("Version=%s\n", version);'

Thank Salem.
Correct

Code:

---

echo 'const char *version = "'$(shell git describe --abbrev=4 --always --tags)'";' > version_info.c

---