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Breldigital > Blog > ds > Printing a variable in c
ds

Printing a variable in c

By John Published November 10, 2022
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This C Program prints environment variables.Environment variables are a set of dynamic named values that can affect the way running processes will behave on a computer.
Here is source code of the C Program to print environment variables. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

/*
* C Program to Print Environment variables
*/
#include

void main(int argc, char *argv[], char * envp[])
{
int i;

for (i = 0; envp[i] != NULL; i++)
{
printf(“\n%s”, envp[i]);
}
}
$ cc arg7.c
$ a.out

HOSTNAME=localhost.localdomain
SELINUX_ROLE_REQUESTED=
SHELL=/bin/bash
TERM=xterm
HISTSIZE=1000
SSH_CLIENT=192.168.7.43 49162 22
SELINUX_USE_CURRENT_RANGE=
QTDIR=/usr/lib64/qt-3.3
QTINC=/usr/lib64/qt-3.3/include
SSH_TTY=/dev/pts/8
USER=harika
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=01;05;37;41:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.tbz=01;31:*.tbz2=01;31:*.bz=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=01;36:*.au=01;36:*.flac=01;36:*.mid=01;36:*.midi=01;36:*.mka=01;36:*.mp3=01;36:*.mpc=01;36:*.ogg=01;36:*.ra=01;36:*.wav=01;36:*.axa=01;36:*.oga=01;36:*.spx=01;36:*.xspf=01;36:
PATH=/usr/lib64/qt-3.3/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/harika/bin:.
MAIL=/var/spool/mail/harika
PWD=/home/harika
KDE_IS_PRELINKED=1
LANG=en_US.UTF-8
KDEDIRS=/usr
SELINUX_LEVEL_REQUESTED=
HISTCONTROL=ignoredups
SSH_ASKPASS=/usr/libexec/openssh/gnome-ssh-askpass
HOME=/home/harika
SHLVL=2
LOGNAME=harika
CVS_RSH=ssh
QTLIB=/usr/lib64/qt-3.3/lib
SSH_CONNECTION=192.168.7.43 49162 192.168.7.140 22
LESSOPEN=|/usr/bin/lesspipe.sh %s
G_BROKEN_FILENAMES=1
_=./a.out
OLDPWD=/home

TAGGED: Printing a variable in c
John November 10, 2022 November 10, 2022

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