How can I autoformat indent C code in vim

Question

When I copy code from another file  the formatting is messed up  like this   fun     for        for        if                  How can I autoformat this code in vim

User · Answer

Their is a tool called indent  You can download it with apt-get install indent  then run indent my program c

User · Answer

The builtin command for properly indenting the code has already been mentioned  gg G   If you want to beautify the code  you ll need to use an external application like indent  Since   denotes the current file in ex mode  you can use it like this     indent

User · Answer

Try the following keystrokes   gg G   Explanation  gg goes to the top of the file    is a command to fix the indentation and G tells it to perform the operation to the end of the file

User · Answer

Maybe you can try the followings    indent -kr -i8   c  Hope it s useful for you

User · Answer

The plugin vim-autoformat lets you format your buffer  or buffer selections  with a single command  https   github com Chiel92 vim-autoformat  It uses external format programs for that  with a fallback to vim s indentation functionality

User · Answer

I find that clang-format works well   There are some example keybindings in the clang documentation  I prefer to use the equalprg binding in vim  This allows you to invoke clang-format with G gg or other   indent options   Just put the following in your  vimrc file   autocmd FileType c cpp setlocal equalprg clang-format

User · Answer

I like to use the program Artistic Style  According to their website      Artistic Style is a source code indenter  formatter  and beautifier for the C  C    C  and Java programming languages    It runs in Window  Linux and Mac  It will do things like indenting  replacing tabs with spaces or vice-versa  putting spaces around operations however you like  converting if x lt 2  to if   x lt 2   if that s how you like it   putting braces on the same line as function definitions  or moving them to the line below  etc  All the options are controlled by command line parameters   In order to use it in vim  just set the formatprg option to it  and then use the gq command  So  for example  I have in my  vimrc   autocmd BufNewFile BufRead   cpp set formatprg astyle  -T4pb   so that whenever I open a  cpp file  formatprg is set with the options I like  Then  I can type gg to go to the top of the file  and gqG to format the entire file according to my standards  If I only need to reformat a single function  I can go to the top of the function  then type gq   and it will reformat just that function   The options I have for astyle  -T4pb  are just my preferences  You can look through their docs  and change the options to have it format the code however you like   Here s a demo  Before astyle   int main   if x lt 2  x 3     float test     if x lt 2  x 3      After astyle  gggqG    int main         if  x  lt  2                x   3           float test         if  x  lt  2          x   3      Hope that helps

User · Answer

I wanted to add  that in order to prevent it from being messed up in the first place you can type  set paste before pasting  After pasting  you can type  set nopaste for things like js-beautify and indenting to work again

User · Answer

I like indent as mentioned above  but most often I want to format only a small section of the file that I m working on  Since indent can take code from stdin  its really simple    Select the block of code you want to format with V or the like  Format by typing   indent    astyle takes stdin too  so you can use the same trick there

[c] How can I autoformat/indent C code in vim?

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