THINK C 4.0 (1989)
Imaged from original disks on a Power Macintosh 6100/60
Disk Copy 4.2, System 7.1.2
Stuffed with DropStuff 5.1.2

4x 800KB disk images.
Tag data is present.

See Also:
THINK C [3.0.2][1], [5.0][2], [6.0][3], [6.0.1][4]
Symantec C++ [6.0][5], [7.0][6], [8.6][7]
[Think C From Scratch][8], [Macintosh C Programming by Example][9]

Compatibility
Architecture: 68k

Paraphrased from the manual:

Recommended:
2MB RAM
HD
System 6.0
MultiFinder (not recommended for 1MB Macs)

Minimum:
1MB RAM (No debugger or MultiFinder)
2x 800K
System 5.0

Compatible systems:
Mac 512Ke (if 1+ MB RAM)
Mac Plus
Mac SE
Mac II series

  [1]: http://macintoshgarden.org/apps/thinks-lightspeedc-302
  [2]: http://macintoshgarden.org/apps/think-c
  [3]: http://macintoshgarden.org/apps/symantec-think-c-60
  [4]: http://macintoshgarden.org/apps/think-c-601
  [5]: http://macintoshgarden.org/apps/symantec-c-60
  [6]: http://macintoshgarden.org/apps/symantec-c-70
  [7]: http://macintoshgarden.org/apps/symantec-c-86
  [8]: http://macintoshgarden.org/apps/think-c-scratch
  [9]: http://macintoshgarden.org/apps/macintosh-c-programming-example