C/C++: 'printf' is ambiguous ' Candidates are: int printf(const char *, ...) '

[seanw2020]

Using Eclipse, I don't see any errors for the following C++ code, but I do in eclim. Any thoughts about why?

Code:

#include <cstdio>
using namespace std;

int main() {
        int x = 7;
        int *y = &x;
        printf("x is %d\n", x);
        printf("y is %d\n", y);
}

:llist

 1 eclipse-workspace/scratch/scratch.cpp:7 col 2 error: 'printf' is ambiguous ' Candidates are: int printf(const char *, ...) '
 2 eclipse-workspace/scratch/scratch.cpp:8 col 2 error: 'printf' is ambiguous ' Candidates are: int printf(const char *, ...) '
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:ProjectNatures

scratch                - c++, cpp, c
Press ENTER or type command to continue

Background:

:PingEar
eclim   2.7.2
eclipse 4.7.2
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vim --version
[x@eclim ~]$ vim --version
VIM - Vi IMproved 8.0 (2016 Sep 12, compiled Feb 28 2018 14:57:49)
Included patches: 1-1553
Modified by <bugzilla@redhat.com>
Compiled by <bugzilla@redhat.com>
Huge version without GUI.  Features included (+) or not (-):
+acl               +farsi             +mouse_sgr         -tag_any_white
+arabic            +file_in_path      -mouse_sysmouse    -tcl
+autocmd           +find_in_path      +mouse_urxvt       +termguicolors
-autoservername    +float             +mouse_xterm       +terminal
-balloon_eval      +folding           +multi_byte        +terminfo
+balloon_eval_term -footer            +multi_lang        +termresponse
-browse            +fork()            -mzscheme          +textobjects
++builtin_terms    +gettext           +netbeans_intg     +timers
+byte_offset       -hangul_input      +num64             +title
+channel           +iconv             +packages          -toolbar
+cindent           +insert_expand     +path_extra        +user_commands
-clientserver      +job               +perl/dyn          +vertsplit
-clipboard         +jumplist          +persistent_undo   +virtualedit
+cmdline_compl     +keymap            +postscript        +visual
+cmdline_hist      +lambda            +printer           +visualextra
+cmdline_info      +langmap           +profile           +viminfo
+comments          +libcall           +python/dyn        +vreplace
+conceal           +linebreak         +python3/dyn       +wildignore
+cryptv            +lispindent        +quickfix          +wildmenu
+cscope            +listcmds          +reltime           +windows
+cursorbind        +localmap          +rightleft         +writebackup
+cursorshape       +lua/dyn           +ruby/dyn          -X11
+dialog_con        +menu              +scrollbind        -xfontset
+diff              +mksession         +signs             -xim
+digraphs          +modify_fname      +smartindent       -xpm
-dnd               +mouse             +startuptime       -xsmp
-ebcdic            -mouseshape        +statusline        -xterm_clipboard
+emacs_tags        +mouse_dec         -sun_workshop      -xterm_save
+eval              +mouse_gpm         +syntax
+ex_extra          -mouse_jsbterm     +tag_binary
+extra_search      +mouse_netterm     +tag_old_static
   system vimrc file: "/etc/vimrc"
     user vimrc file: "$HOME/.vimrc"
 2nd user vimrc file: "~/.vim/vimrc"
      user exrc file: "$HOME/.exrc"
       defaults file: "$VIMRUNTIME/defaults.vim"
  fall-back for $VIM: "/etc"
 f-b for $VIMRUNTIME: "/usr/share/vim/vim80"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H     -O2 -g -pipe -Wall -Werror=format-security -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/python3.6m -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1
Linking: gcc   -L. -Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -fstack-protector -rdynamic -Wl,-export-dynamic -Wl,--enable-new-dtags -Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld  -Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -L/usr/local/lib -Wl,--as-needed -o vim        -lm -lnsl  -lselinux   -lncurses -lacl -lattr -lgpm -ldl   -Wl,--enable-new-dtags -Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -fstack-protector-strong -L/usr/local/lib  -L/usr/lib64/perl5/CORE -lperl -lpthread -lresolv -lnsl -ldl -lm -lcrypt -lutil -lc
[x@eclim ~]$

Thank you!