Up until now, we have been compiling our programs with just the -o output_file option. Your compiler, whether gcc, clang, or icc, probably unbeknownst to you before this point, has a bewildering array of options.
If you are curious, type cc -help into your command shell and see what spews out. Tread lightly! If you do this, just understand thatyou will never need the vast majority of those options. Some of these options are for the compiler only; others are passed on to the linker only. They are there for both very specialized system software configurations and for the compiler and linker writers.
If you are using a Unix or Unix-like system, try man cc in the command shell to see a more reasonable list of options and their usage.
The most important of these options, and the one we will use from now on, is -std=c17 or -std=c11. The -std switch tells the compiler which version of the C standard to use. Some compilers default...