Then you can compile your code with by simply running gcc as in the next line without having to fire up the big, ugly software development GUI called Xcode: gcc -Wall -o program program.c Now install the command-line tools like this: xcode-select -install How to start Terminal? You need to do another "Spotlight Search", which means you type ⌘ Space and start typing Terminal and hit Enter when it guesses Terminal. Then you need to install the command-line tools in Terminal. How to find App Store? Do a "Spotlight Search" by typing ⌘ Space and start typing App Store and hit Enter when it guesses correctly.
Now you need the compiler, so you need to go to App Store and install Xcode which is Apple's compiler and development tools.