run c++ in vim

function! TermWrapper(command) abort
        if !exists('g:split_term_style') | let g:split_term_style = 'vertical' | endif
        if g:split_term_style ==# 'vertical'
                let buffercmd = 'vnew'
        elseif g:split_term_style ==# 'horizontal'
                let buffercmd = 'new'
        else
                echoerr 'ERROR! g:split_term_style is not a valid value (must be ''horizontal'' or ''vertical'' but is currently set to ''' . g:split_term_style . ''')'
                throw 'ERROR! g:split_term_style is not a valid value (must be ''horizontal'' or ''vertical'')'
        endif
        if exists('g:split_term_resize_cmd')
                exec g:split_term_resize_cmd
        endif
        exec buffercmd
        exec 'term ' . a:command
        exec 'startinsert'
endfunction

command! -nargs=0 CAR call TermWrapper(printf('g++ -std=c++11 %s && ./a.out', expand('%')))
command! -nargs=1 CompileAndRunWithFile call TermWrapper(printf('g++ -std=c++11 %s && ./a.out < %s', expand('%'), <args>))
autocmd FileType cpp nnoremap <Buffer><F5>fw CAR<CR>