-lang [V1.06 or later]

This option specifies the language standard of the C source file.

[Specification format]

-lang={c|c99}

-	Interpretation when omitted

Compilation is executed in accord with the C90 standard.

[Detailed description]

-	This option specifies the language standard of the C source file.

-	When the -lang=c option is specified or the option is omitted, compilation is executed in accord with the C90 standard.

-	When the -lang=c99 option is specified, compilation is executed in accord with the C99 standard.

-	If any option other than -lang=c or -lang=c99 is specified, an error will occur.