GCC for C 热热身

suffix

.a  Static object library (archive).
.c  C source code that is to be preprocessed.
.h  C source code header file.
.i  C source code that is not to be preprocessed. This type of file is
    produced as an intermediate step in compilation.
.o  An object file in a format appropriate to be supplied to the linker.
    This type of file is produced as an intermediate step in compilation.
.s  Assembly language code. This type of file is produced as an
    intermediate step in compilation.
.so Shared object library.