C语言标准ISO9899的各个版本

C90

• ISO/IEC 9899:1990 219 Pages
• ISO/IEC 9899:1990/AMD 1:1995 51 Pages
• ISO/IEC 9899:1990/COR 1:1994 8 Pages
• ISO/IEC 9899:1990/COR 2:1996 1 Pages

C99

• ISO/IEC 9899:1999 538 Pages
• ISO/IEC 9899:1999/COR 1:2001 6 Pages
• ISO/IEC 9899:1999/COR 2:2004 15 Pages
• ISO/IEC 9899:1999/COR 3:2007 10 Pages

C11

• ISO/IEC 9899:2011 683 Pages
• ISO/IEC 9899:2011/COR 1:2012 2 Pages

C18

• ISO/IEC 9899:2018 520 Pages

GCC 支持的版本

-std=c89                    Conform to the ISO 1990 C standard.  Same as -std=c90.
  -std=c90                    Conform to the ISO 1990 C standard.
  -std=c99                    Conform to the ISO 1999 C standard.
  -std=c9x                    Deprecated in favor of -std=c99.  Same as -std=c99.
  -std=c11                    Conform to the ISO 2011 C standard.
  -std=c17                    Conform to the ISO 2017 C standard (published in 2018).
  -std=c18                    Conform to the ISO 2017 C standard (published in 2018).  Same as -std=c17.
  -std=c1x                    Deprecated in favor of -std=c11.  Same as -std=c11.
  -std=c2x                    Conform to the ISO 202X C standard draft (experimental and incomplete support).
  -std=iso9899:1990           Conform to the ISO 1990 C standard.  Same as -std=c90.
  -std=iso9899:199409         Conform to the ISO 1990 C standard as amended in 1994.
  -std=iso9899:1999           Conform to the ISO 1999 C standard.  Same as -std=c99.
  -std=iso9899:199x           Deprecated in favor of -std=iso9899:1999.  Same as -std=c99.
  -std=iso9899:2011           Conform to the ISO 2011 C standard.  Same as -std=c11.
  -std=iso9899:2017           Conform to the ISO 2017 C standard (published in 2018).  Same as -std=c17.
  -std=iso9899:2018           Conform to the ISO 2017 C standard (published in 2018).  Same as -std=c17.