how to add a directory in path linux

C++
# For this Purpose you have to edit ~/.bashrc file.
# So in terminal:
nano ~/.bashrc
# Now add this command to the file and instead of ADDRESS,
# write your desired address
export PATH=$PATH:ADDRESS
# Like:
export PATH=$PATH:/usr/local/hadoopexport PATH=$PATH:/place/with/the/fileexport PATH="$HOME/bin:$PATH"
nano ~/.bashrc
Source

Also in C++: