Using Vim for C++ - Codeforces

4 years ago, # ^ |

← Rev. 2 →

I put it in my .vimrc but when I press F8, it doesn't run. Where does the output show? How to input numbers? Do you have multiple input and output files?

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_Naim_

4 years ago, # ^ |

It works fine for me. Where did you put .vimrc file ? are you sure it is on your home directory. you can just make it like, vim ~/.vimrc or vim /home/USERNAME/.vimrc

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4 years ago, # ^ |

Ya, I put it in my home directory.

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AQZZ

4 years ago, # |

I don't use Vim but if you are compiling from the command line you can make an alias so that you can type "bd" instead of "g++ -Wall ...". On Linux you can modify the .bash_aliases. On Windows you can modify $PROFILE by adding a function to it like:

function cl($arg) {
    g++ -std=c++17 -Wshadow -Wall -Wextra -g -D_GLIBCXX_DEBUG $arg
}

and then you can simply type "cl xxx.cpp" to compile.

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4 years ago, # ^ |

← Rev. 2 →

I want to compile and run within Vim but thanks!

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4 years ago, # ^ |

BTW, how do you modifly $PROFILE? Just a question, was wondering...

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Printf-Red_coder-

4 years ago, # ^ |

can you please help me .. i want to compile by such that it opens a new terminal screen so that i can compair my code and its output

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4 years ago, # ^ |

Did you set up .vimrc?

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Printf-Red_coder-

4 years ago, # ^ |

yes but its compiling and running my code in same terminal i.e by first closing my vim and then running my code and then after that again opening my vim.. i want that the output must be shown by opening new terminal window ..like in codingblocks ide... is it possible?? help:)

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4 years ago, # ^ |

← Rev. 2 →

You can use :term CMD to open a terminal in a new window and execute a command in that window. E.g. try :term ls. Replace that with your command you want to run, e.g. the command to compile or run your program. Obviously you can also make a keybinding for that command.

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Dsxv

4 years ago, # |

Here's my Compilation and Execution part of Vim Config

so ~/.vim/plugins.vim
filetype on
filetype indent on
syntax enable
autocmd BufNewFile *.cpp execute "0r ~/.vim/template/".input("Template name: ").".cpp"
map <F9> :!g++ -g % -o %:r && ./%:r <CR>
map <F5> :!g++ -g % -o %:r <CR>
map <F2> :w <CR>
map <F12> :!gdb ./%:r <CR>

F9 for Compile and Run
F5 for Compile ( never use this :p )
F2 for saving file

I save and run inside Vim. Also, when creating a new file it asks for a template that I should load , which is saved in .vim/template and it fetches .cpp types which you can easily change

And just in Case :

My Vim Configuration

so ~/.vim/plugins.vim
filetype on
filetype indent on
syntax enable
autocmd BufNewFile *.cpp execute "0r ~/.vim/template/".input("Template name: ").".cpp"
map <F9> :!g++ -g % -o %:r && ./%:r <CR>
map <F5> :!g++ -g % -o %:r <CR>
map <F2> :w <CR>
map <F12> :!gdb ./%:r <CR>
map <C-a> gg v G
map <C-c> "+y
map <C-h> :.,$s/min//g
" map <C-_> :s/^/\/\//<Enter>
" map <C-u> :s/^\/\///<Enter>
nmap <C-_>   <Plug>NERDCommenterToggle
vmap <C-_>   <Plug>NERDCommenterToggle<CR>gv
set whichwrap+=<,>,[,],l,h
set number
set tabstop=4
set shiftwidth=4
if (empty($TMUX))
  if (has("nvim"))
  let $NVIM_TUI_ENABLE_TRUE_COLOR=1
  endif
  if (has("termguicolors"))
    set termguicolors
  endif
endif

set autoindent
set mouse=a
set background=light " for the dark version
" set background=light " for the light version
colorscheme molokai

Hope it helps!

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4 years ago, # ^ |

When I press F9, it says that '.' is not recognized as an internal or external command, operable program or batch file. shell returned 1. How to solve this problem?

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4 years ago, # ^ |

← Rev. 2 →

Here is my .vimrc

.vimrc

set nocompatible              " be iMproved, required
filetype off                  " required

set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()

Plugin 'VundleVim/Vundle.vim'
Plugin 'joshdick/onedark.vim'
call vundle#end()            " required
filetype plugin indent on    " required

behave mswin
syntax on
colorscheme onedark
			
set backspace=indent,eol,start  " more powerful backspacing
au GUIEnter * simalt ~x
set hls
set is
set cb=unnamed
set guifont=*
set gfn=Fixedsys:h10
set ts=4
set sw=4
set si
set autoindent
set smartindent
set nocompatible
set number
set relativenumber
inore jj <Esc>
function GuiTabLabel()
    let label = ''
    let bufnrlist = tabpagebuflist(v:lnum)

    for bufnr in bufnrlist
        if getbufvar(bufnr, "&modified")
            let label = '+'
            break
        endif
    endfor

    let wincount = tabpagewinnr(v:lnum, '$')
    if wincount > 1
        let label .= wincount
    endif
    if label != ''
        let label .= ' '
    endif

    return label . "%t"
endfunction

set guitablabel=%!GuiTabLabel()

inoremap { {}<Left>
inoremap {<CR> {<CR>}<Esc>O
inoremap {{ {
inoremap {} {}

""inoremap " ""<left>
""inoremap ' ''<left>
""inoremap [ []<left>
"inoremap ( ()<left>

filetype on
filetype indent on
syntax enable
autocmd BufNewFile *.cpp execute "0r ~/.vim/template/".input("Template name: ").".cpp"
map <F9> :!g++ -g % -o %:r && ./%:r <CR>
map <F5> :!g++ -g % -o %:r <CR>
map <F2> :w <CR>
map <F12> :!gdb ./%:r <CR>

set diffexpr=MyDiff()
function MyDiff()
  let opt = '-a --binary '
  if &diffopt =~ 'icase' | let opt = opt . '-i ' | endif
  if &diffopt =~ 'iwhite' | let opt = opt . '-b ' | endif
  let arg1 = v:fname_in
  if arg1 =~ ' ' | let arg1 = '"' . arg1 . '"' | endif
  let arg1 = substitute(arg1, '!', '\!', 'g')
  let arg2 = v:fname_new
  if arg2 =~ ' ' | let arg2 = '"' . arg2 . '"' | endif
  let arg2 = substitute(arg2, '!', '\!', 'g')
  let arg3 = v:fname_out
  if arg3 =~ ' ' | let arg3 = '"' . arg3 . '"' | endif
  let arg3 = substitute(arg3, '!', '\!', 'g')
  if $VIMRUNTIME =~ ' '
    if &sh =~ '\<cmd'
      if empty(&shellxquote)
        let l:shxq_sav = ''
        set shellxquote&
      endif
      let cmd = '"' . $VIMRUNTIME . '\diff"'
    else
      let cmd = substitute($VIMRUNTIME, ' ', '" ', '') . '\diff"'
    endif
  else
    let cmd = $VIMRUNTIME . '\diff'
  endif
  let cmd = substitute(cmd, '!', '\!', 'g')
  silent execute '!' . cmd . ' ' . opt . arg1 . ' ' . arg2 . ' > ' . arg3
  if exists('l:shxq_sav')
    let &shellxquote=l:shxq_sav
  endif
endfunction

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Dsxv

4 years ago, # ^ |

← Rev. 2 →

~~By any chance, are you on Windows?~~

Edit : Sorry Never came across such error , Did you try compiling first , then running by terminal command ./file_name

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4 years ago, # ^ |

How to compile first and how to run it in terminal?

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Dsxv

4 years ago, # ^ |

As mentioned above,

By pressing F2 to save your code,
F5 you can compile your code,( if there's no error, there will be a file created in your current directory with name of your current cpp file name )
Exit vim and run ./filename in the directory file is saved

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4 years ago, # ^ |

Thanks!

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Ssaranshh13

17 months ago, # ^ |

Is there any solution for windows, it's working in linux but showing error in powershell

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ventak

4 years ago, # ^ |

thank you! But is this the same for VIM in windows too?! Where the .vimrc file is named as _vimrc.

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4 years ago, # ^ |

I would (in normal mode) type ":version" and then a list of files will appear. Towards the bottom, it will say "user vimrc file: " then that file name. If you don't see that, first create one.

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_siddharth_

4 years ago, # ^ |

How to set up a C++ template for a GVIM on Windows for competitive programming? Please I have tried so hard, but I haven't found any solution.

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4 years ago, # ^ |

What do you mean by template? Is it like sublime in which you type in the "template", the template appears in the file?

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_siddharth_

4 years ago, # ^ |

Yes.

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4 years ago, # ^ |

Blog

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4 years ago, # ^ |

-8

which font do u use for vim?

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4 years ago, # ^ |

What is up hackerman44.

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4 years ago, # ^ |

-8

sorry for getting blocked! by the way, i just needed an answer! so i commented, plz do reply!

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4 years ago, # ^ |

I use Consolas 15

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4 years ago, # |

I would like to have a vim plugin to include code snippets.

On some keypress a listing of the files of a configured directory should be displayed. I can choose one. If choosen, that file should be copied into my current edited file, maybe at cursor position.

Any suggestions? Or how to write such one?

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4 years ago, # ^ |

Or does somebody know how to use/extend NERDTree for that purpose? File listing and choosing is perfect, but I don't know how to read a file on keypress. Instead I have to open it, copy content, close it, then paste content.

Surly there is a better way.

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faker_faker

4 years ago, # ^ |

I don't exactly know how to do this in Vim, but whenever I need to copy a whole file I just do xsel -b < FILE.

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4 years ago, # ^ |

← Rev. 2 →

Hey. I've done exactly the thing you are describing. With a key binding I can choose between all my prewritten algorithms, choose one, and it will be copied into the file at the current position.

Take a look here: https://github.com/jakobkogler/Algorithm-DataStructures (The Readme also contains a GIF with a short demonstration)

The path to the directory is hard-coded to my algorithms, but you can also change it to something different in the autoload/alg_ds.vim file.

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4 years ago, # ^ |

This is cool, with preview! Thanks a lot.

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LightYear

4 years ago, # ^ |

← Rev. 2 →

You might wanna try UltiSnips. It works just like snippets in VS Code and Sublime. You can even add a tab trigger with a few lines of vim script.

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4 years ago, # ^ |

bruh! can u share your vimrc file ?

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4 years ago, # ^ |

Not sure if it really helps, but anyway:

.vimrc

colo desert
syntax on
set softtabstop=4 shiftwidth=4 expandtab

" block cursor and colors as of
" https://superuser.com/questions/634326/how-can-i-get-a-block-cursor-in-vim-in-the-cygwin-terminal
let &t_ti.="\e[1 q"
let &t_SI.="\e[5 q"
let &t_EI.="\e[1 q"
let &t_te.="\e[0 q"

" see https://stackoverflow.com/questions/2355834/how-can-i-autoformat-indent-c-code-in-vim
autocmd BufNewFile,BufRead *.cc set formatprg=astyle\ -A14\ --lineend=linux\ --break-one-line-headers\ --max-code-length=160

nnoremap <F7> :w \| !cf test<CR>
nnoremap <F9> :w \| !cf submit<CR>

" Specify a directory for plugins
" " - For Neovim: stdpath('data') . '/plugged'
" " - Avoid using standard Vim directory names like 'plugin'
" see https://github.com/junegunn/vim-plug
call plug#begin('~/.vim/plugged')

Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'jakobkogler/Algorithm-DataStructures'

call plug#end()

nmap <leader>alg :AlgDS<CR>
nmap <F6> :AlgDS<CR>

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veschii_nevstrui

4 years ago, # |

← Rev. 2 →

Use terminal and Makefile.

Makefile

CC=g++-8
CFLAGS=-std=c++17 -Wall -Wextra -Wshadow -Wconversion -g -fsanitize=address -fsanitize=undefined -fuse-ld=gold -D_GLIBCXX_DEBUG -O2

all: a b c d e f g h i j k l m

a: a.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

b: b.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

c: c.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

d: d.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

e: e.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

f: f.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

g: g.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

h: h.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

i: i.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

j: j.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

k: k.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

l: l.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

m: m.cpp
	$$$(CC) $$$(CFLAGS) -o $$$@ $$$^

P.S. I don't know, why one dollar automatically replace to three dollars, and have no idea, how to write exactly one dollar, sorry(

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voidz

4 years ago, # ^ |

can u share ur github link for the makefile and can u share how does it work on windows

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veschii_nevstrui

4 years ago, # ^ |

Ok, link.

Idk, how does it work on windows. I advise you to install any Unix system, it's more useful for programming.

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Mr.Beast007

4 years ago, # |

I am new here. Is there any reason why using vim is better than sublime? There are many good settings and automations that you can do with sublime.

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4 years ago, # ^ |

What editor you use is up to your personal preference. An editor might be better for me, but worse for you. Find one that you like, learn how to use it and stick to it.

The reason I use Vim, is because it is small, fast, directly available in the terminal, available on every server, modal editing is awesome, huge possibilities of configuration and extension, one editor for everything, ...

Also I doubt that Sublime has a feature that you can't have in Vim. Well, maybe one feature: being beginner friendly :-)

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blue_m00n_eoy

4 years ago, # ^ |

Seems appropriate. But why not just use the custom invocation provided by CodeForces itself?

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4 years ago, # ^ |

Advantages that you have by developing locally:

much faster compile and run times
not dependent on internet connection
you can work on multiple files at once
auto-completion, error warnings, jump to declaration, and many other IDE niceties
debugging capabilities
code snippets support
you don't get called "noob" as often
and probably many, many more...

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tuanio

4 years ago, # |

← Rev. 3 →

simplest form of compiler flag

map<C-b> :!g++ -std=c++17 -O2 % <CR>  
map<C-n> :!./a.out < in <CR>

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4 years ago, # ^ |

I use

autocmd filetype cpp nnoremap <F9> :w <bar> !g++ -std=c++17 % -O2 -Wall -Wextra -DLOCAL -o %:r -Wl,--stack,268435456<CR>
autocmd filetype cpp nnoremap <F10> :!%:r<CR>

just press for compiling and for executing. :P

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coolboy7

4 years ago, # ^ |

it's working, but how can i run, compile and save from a single command??

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4 years ago, # ^ |

All you have to do to compile is press . Then, you can press for executing where you can input your data. For saving a file go to normal mode by pressing then type

:w

If you want to close and save that file in normal mode, you can press

:wq

Hope that this helped!

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4 years ago, # ^ |

How can i compile & run pressing a single function ?? i have a source but it only compile & runs C++11 .But i want it for C++17 .

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4 years ago, # ^ |

If you want to press a single button and have it compile and execute and have C++17 with -O2 and -Wall put

"autocmd filetype cpp nnoremap <F5> :w <bar> !g++ -std=c++17 -O2 -Wall % -o %:r && %:r.exe <CR>

in your .vimrc.

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4 years ago, # ^ |

But, how can i add this --stack,268435456 in vimrc for compiling & running at the same time !?

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4 years ago, # ^ |

Then use

autocmd filetype cpp nnoremap <F5> :w <bar> !g++ -std=c++17 -O2 -Wall % -o %:r -Wl,--stack,268435456 && %:r.exe <CR>

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4 years ago, # ^ |

But when i try to add bits/stdc++.h , it doesn't work and shows error.

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4 years ago, # ^ |

It works for me though

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4 years ago, # ^ |

which compiler are u using for C++ ?

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4 years ago, # ^ |

I am using MinGW version 9.2.0 on Windows.

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4 years ago, # ^ |

← Rev. 3 →

bruh! i am also using tmw's vimrc but when i first compile (with bits/stdc++.h header) with F9, and then execute my cpp file with F10, the compilation is done quickly, but the problem is=> if i use a F5 to compile & run (that u provided me in this post

this line

), the performance is laggy and why does it takes more than 4 seconds to compile first and then run. Any fix to reduce the time with appropriate compilation flag?

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4 years ago, # ^ |

Precompiled headers.

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4 years ago, # ^ |

i did that also, but didn't work! u can check on your windows also. thanks!

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