Why do GCC and Clang with -std=iso9899:1990 (i.e. C90) allow LL integer constant suffixes?...

Is it safe to cast size_t to unsigned long int?...

Is there an `alignof` implementation portable to standard C89 and C99?...

Size of anonymous struct standard conformant?...

What are the major differences between ANSI C and K&R C?...

What is the difference between C, C99, ANSI C and GNU C?...

Representing individual bits in C...

How does C90 treat non-directives / unrecognised preprocessing directives?...

K&R Exercise 1.16 - Limitation on line length...

Have the code examples from K&R ever been conforming?...

Char Arrays as Compile-Time Constants...

Which most common extensions are there (or used) to ANSI C?...

Format strings safely when vsnprintf is not available...

Is it possible to cast one type of bitfield to another type of bitfield with the same total number o...

Is a ISO C90 compiler needed for install gcc...

integer promotion isn't taken into account...

Is an uninitialized global struct with uninitialized int member defined behaviour in C?...

Macro: void value not ignored as it ought to be...

What does //**/ mean?...

Why should you use strncpy instead of strcpy?...

Compiler doesn't issue warning on `uint64_t` under strict C89 mode...

GCC options for strict C90 code?...

What is the behavior of integer division?...

Using M_PI with C89 standard...

Is converting from unsigned char to signed char and vice versa in C89 well defined?...

How can the initialization of a struct be used as variable in a function call. ANSI-C Version...

The meaning of "EiC"...

C90: While loop function condition always met...

C90 "Aborted (core dumped) massage" (new to C)...

Learning about MsBuild project files for Compiling Ansi C90...