129 lines
3.9 KiB
Markdown
129 lines
3.9 KiB
Markdown
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# C++
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## Command Line (Mac)
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### Option 1
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```
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brew install gcc
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```
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According to [this](https://stackoverflow.com/questions/30998890/installing-opencv-with-brew-never-finishes) if brew doesn't seem to finish for a long time then
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```
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brew install gcc --force-bottle
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```
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probably suffices.
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### Option 2 (Old))
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Follow the instructions [here](https://wiki.helsinki.fi/display/HUGG/GNU+compiler+install+on+Mac+OS+X?fbclid=IwAR3bnM6A_kTgXD2p5nOfVbxRRQ4nHMj89jllNy1-zdtfXfcq1czbSoXiWgE). Step 4 will give errors but it should still install.
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### Confirmation
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You should be able to compile with g++ or maybe g++-#, where # is the version number (currently 9). Running the following command:
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```
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g++-9 --version
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```
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should display something like this:
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```
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g++-9 (Homebrew GCC 9.2.0_2) 9.2.0
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Copyright (C) 2019 Free Software Foundation, Inc.
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This is free software; see the source for copying conditions. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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```
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## Shortcuts
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Open your bash profile with a text editor such as gedit (or sublime text).
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```
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brew install gedit
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gedit ~/.zshenv
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```
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You can add aliases and functions here, such as the following:
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```
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alias clr="clear"
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alias ZES='source ~/.zshenv'
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alias ZEO='subl ~/.zshenv'
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alias IMPL='cd ~/Documents/GitHub/USACO/Implementations/'
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co() {
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g++-9 -std=c++11 -O2 -Wl,-stack_size -Wl,0x10000000 -Wall -Wextra -o $1 $1.cpp
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}
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run() {
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co $1 && ./$1
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}
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```
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Now you can easily run C++ from the command line by calling run.
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```
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run [prog name]
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```
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## Troubleshooting
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Make sure you have installed XCode command line tools.
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```
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xcode-select --install # make sure x-code command line tools are installed
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softwareupdate --list
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softwareupdate -i -a # installs everything
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```
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### OS X Mojave
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Navigate to your bash profile
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```
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gedit ~/.bash_profile
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```
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and add the following line:
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```
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export CPLUS_INCLUDE_PATH="/usr/local/include/c++/8.1.0/:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include:$CPLUS_INCLUDE_PATH"
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```
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### OS X Catalina
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Maybe the following links are helpful?
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* [StackOverflow](https://stackoverflow.com/questions/58278260/cant-compile-a-c-program-on-a-mac-after-upgrading-to-catalina-10-15)
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* [SolarianProgrammer](https://solarianprogrammer.com/2019/10/12/compiling-gcc-macos/)
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~~Whoops I couldn't figure out how to use g++ successfully D:~~ Turns out that g++ was linked to g++-8 instead of g++-9, changing it now works.
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## Tools
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### Online
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* [CSAcademy](https://csacademy.com/workspace/)
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* I used this a lot until the queue time limits got rlly annoying
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* [Ideone](http://ideone.com/)
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* seems okay if you use an ad blocker
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* sometimes randomly erases your code when you first create it (so get in the habit of copying your code before creating it :P)
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### Local IDEs
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* [Geany](https://www.geany.org/)
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* [Visual Studio Code](https://code.visualstudio.com/)
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* [XCode](https://developer.apple.com/xcode/)
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* mac
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* [Codeblocks](http://www.codeblocks.org/)
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* bad on mac :(
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### Text Editors
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* [Sublime Text 3](https://www.sublimetext.com/)
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* [Editing Build Settings](https://stackoverflow.com/questions/23789410/how-to-edit-sublime-text-build-settings)
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* [FastOlympicCoding Addon](https://github.com/Jatana/FastOlympicCoding)
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* [Symlink](https://www.sublimetext.com/docs/3/osx_command_line.html)
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* Using '/usr/local/bin/subl' instead of '~/bin/subl' worked for me on OS X Mojave.
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* [Atom](https://atom.io/)
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## Useful Links
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### Reference
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* [cplusplus](http://www.cplusplus.com/reference/)
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* [cppreference](http://en.cppreference.com/w/)
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### Other
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* [Intro to Command Line](http://blog.teamtreehouse.com/introduction-to-the-mac-os-x-command-line)
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* [Command Line Shortcuts](https://jonsuh.com/blog/bash-command-line-shortcuts/)
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* [Run Python Script](https://stackoverflow.com/questions/7855996/cant-run-python-py-files-from-terminal-on-mac)
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* [Competitive C++ Style Guide](https://codeforces.com/blog/entry/64218)
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