@echo off

SET SOME_VAR="main.cpp"
DEL /S "%SOME_VAR%" || echo "file not found"
SET SOME_VAR="main.cpp.swp"
DEL /S "%SOME_VAR%" || echo "file not found"
CALL :_ex

EXIT /B %ERRORLEVEL%

:_ex
echo >"main.cpp"
echo >"main.cpp.swp"

git add .
git commit -m "first commit"
EXIT /B 0