Why Sublime Text 3 is showing the different output

Hello friends,
I’m using Sublime text 3 for a long time but few days suddenly it got any problem and now it’s showing the ASCII value ( I think) of the output. Even it’s the basic Hello World program.
When I include the " ifndef…" line stuff it stops showing output.
Previously I didn’t use the " ifndef" stuffs yet all programs ran.
what may be the reason?? I searched google but didn’t got any solution.

Make sure cpp file and input/output file r in same folders

Yes, it is.

try this cpp build system (might work)