Next time use code tags (the # in the post editor) and remove all redundant information:
-------------- Build file: "no target" in "no project" (compiler: unknown)---------------
Nothing to be done (all items are up-to-date).
Checking for existence: C:\Users\abhis\Documents\C\Untitled12.exe
You have failed setting up the compiler, try following section 4.3 of PB's guide, a PDF downloadable here (https://github.com/PBfordev/wxpbguide).
You can also read section 5.2.3 from Gerard Durand's manual (https://www.codeblocks.org/docs/manual_codeblocks_en.pdf).