Introduction to C

We use the Gnu compiler gcc. Here's an example, assuming that somebody created a C source file called program.c in the current directory:

gcc -Wall -ansi -pedantic -o program program.c

• -Wall prints ``all'' (not exactly all, but lots of) warnings.
• -ansi scolds you if your C source is not compliant with the ANSI (1989) standard.
• -pedantic scolds you for even more things, which may be legal C, but are considered (by the compiler, at least) to be bad.
• -o program says put the executable in program