compiling

 compiling is the process of converting source code to machine code

but it actually consists of the following steps:

pre-processing

compiling

assembling

linking

(when we say compile, we are actually referring to these four steps, but we wont dwell on such low-level details)

pre-processing - looks for "#" , and then finds-and-replaces, copy-and-pastes

cs50 week 2 video 12:40

source: cs50

-lcs50 ---- argument for linking binaries

 clang -o hello hello.c -lcs50

this argument tells the compiler to link the cs50 library binaries

-lm   ....... links a math library

-lcrypt   ......... links to a cryptography or encryption library

make automates the work of manually typing in a whole bunch of command line argument when compiling

cs50 week 2 video 9:30 , 10:42

source: cs50

clang -o hello hello.c. (command line arguments - inputs. to the command)

 configures clang to name the resulting output file "hello" instead of a.out

source: cs50