• 2.5.Strings @[]
• 3.Create Small Tools
  • stream (Std stream: stdin, stdout, stderr)
  • command-line arguments
• 4.Multiple Source Files
  • Data Type @[]

3. Create Small Tools

• JSON (JavaScript Object Notation)

• 2^3??

• stdio: stdin, stdout, stderr => nctu high school

  • https://gerardnico.com/io/standard_stream
  • https://en.wikipedia.org/wiki/Standard_streams
  • https://stackoverflow.com/questions/3385201/confused-about-stdin-stdout-and-stderr
  • https://dotblogs.com.tw/ghoseliang/2013/05/29/105049

• (p136.) You can connect the Standard Output of one process to the Standard Input of another process using a pipe.

4. Multiple Source Files

• @[Data type]

• (p186.) extern, static, auto, register, …

  • magic jack/ one note
  • always global? usage??
  • https://www.cquestions.com/2011/02/extern-keyword-in-c.html
  • https://www.geeksforgeeks.org/understanding-extern-keyword-in-c/
  • https://stackoverflow.com/questions/28610783/are-the-global-variables-extern-by-default-or-it-is-equivalent-to-declaring-vari

5. struct, union, enum, bitfield??

• Init?

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0329r0.pdf http://www.drdobbs.com/the-new-c-declarations-initializations/184401377 https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html https://www.geeksforgeeks.org/designated-initializers-c/