Importance of C

Everybody know C programming is one of the widely used language, created by Dennis Ritchie at Bell Labs.
but do you know that

40+ Operating systems written in C programming

1. DG/UX
2. DDC-l
3. OpenVMS
4. Ultrix
5. HP-UX
6. Enea OSE
7. Google Chrome OS
8. Android
9. HP-UX 11i
10. z/OS
11. AIX (Advanced Interactive Exective)
12. OpenSolaris
13. OS/2
14. IBM Academic Operating System
15. ICL VME (Virtual Machine Entertainment)
16. MicroC/OS-III
17. WindowsNT
18. Windows CE
19. Singularity Operating System
20. RTXC Quadros
21. OS-9
22. Solaris
23. UNIX
24. Minix
25. BSD Unix
26. Darwin
27. Linux
28. OpenIndiana
29. ReactOS
30. Inferno
31. MorphOS
32. EmuTOS
33. iOS
34. Maemo
35. Windows Phone
36. iPoadLinux
37. Rockbox
38. eCos
39. ThreadX
40. Unix
41. AmigaOS
42. Mint (Mint is now Tos)

C is a very powerfull Language to dy we are using windows just because of C.
C language Has a very wide applications