Types and objects that exist outside of it. The compiler can only look at one source file at a time, but a source file can reference The purpose of header files is to allow a source file to use types that exist in other translation Symbols such that the reference in boo.o connects with the definition in foo.o. If foo is defined in foo.c and referenced in bar.c, the linker connects the The linker then takes all of the object files generated by the compiler and attempts to connect up It’s blind to everything outside of the single file it’s compiling.
It takes it on faith that symbols referenced in the source file exist in some other translation The compiler can only see what’s inside of that single C file and nothing else, so When you run the compiler on a source file it compiles it down to an object file (. In C and C++, code is split up into separate files: source files (.
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