"Unable to open input file 'cos. OBJ 'appears during C language Debugging Using TC'

Remember to use TC for debugging.C LanguageWill appear"Unable to open input file 'cos. OBJ '" appears during running '"

In fact, this is a small problem. Today we will simply thank you For the reasons and solutions.

Check whether the path is correct,
For example:
TC must set Option/derectories correctly at E :/.
E:/TC/include
E:/TC/lib

E:/TC
If your E:/Write protection is enabled.
You have to set outputdirectory to a disk with no write protection, for example, F: No write protection.
Set it to: F :/
Or other specified paths such as F:/