Windows [ ] [ (R)..] cmd [OK] Z:\> mkdir progi [Enter] \ ) mkdir progi ) (command ) help [Enter] help ( help ) mkdir make directory Windows ) mkdir mk

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1 Ruby I I 1 Windows 1 Meadow 1: Meadow I Meadow 2 2 Ruby 2.1 I Z progi 1

2 Windows [ ] [ (R)..] cmd [OK] Z:\> mkdir progi [Enter] \ ) mkdir progi ) (command ) help [Enter] help ( help ) mkdir make directory Windows ) mkdir mkdir progi progi help [Enter] 3. help mkdir mkdir 4. cd dir move del copy 5. mkdir progi progi 2

3 2.2 (source program) 1 \ ) ) ) 1 print("hello, Ruby!\n") 2 print("hello, Ruby!\n") 2: Hello, Ruby! 2 Hello, Ruby! Hello, Ruby! hello.rb (suffix).rb ruby Z:\> \ ) ) cd progi [Enter] dir [Enter] progi hello.rb) ruby hello.rb (ruby ) Z:\>cd progi Z:\progI>dir... Z:\progI>ruby hello.rb 1 3

4 Hello, Ruby! Hello, Ruby! cd change directory Windows ) cd cd progi progi dir list directory dir <DIR> print Ruby "Hello, Ruby!\n" \n (") 1. Meadow 2. 2 Meadow ( 3. Z:\progI hello.rb 4. cd progi [Enter] Z progi ( cd progi ) 5. (> [Enter] ( : rubyhello.rb ) Z:\>cd progi Z:\progI>dir Z:\progI>ruby hello.rb Hello, Ruby! 2 4

5 2.3 (?) 2 2 ) ruby hello.rb 3 hello.rb:2: syntax error, unexpected $, expecting ) 3: "hello.rb" 2 2 syntax error, unexpected $, expecting ) $ ) ( ) 2 2 ) tab 1 x = if x == 10 4 print("x 10 \n") 5 else 6 print("x 10 \n") 7 4: sample0.rb sample0.rb 4 2 print 2 5

6 (indent) Meadow Ruby mode Meadow Ruby (.rb ) Ruby mode tab C-x h ESC C-\ sample0.rb 4 tab 4 6 C-x h ESC C-\ sample0.rb 3 Ruby (programming, ) 1. 2 print \n 2. 5 Ruby (suffix).rb 6

7 print("h") print("e") print("l") print("l") print("o\n") print("hello\n") 5: sample1.rb puts("hello") 6: sample2.rb print(2 + 3, "\n") print(2-3, "\n") print(2 * 3, "\n") print(2 / 3, "\n") print(2 ** 3, "\n") print(math.sin(3.14), "\n") print(math.sqrt(2), "\n") 7: sample3.rb print("hello\n") print("hello" + "ruby\n") print("hello" + " ruby" + " world!\n") 8: sample4.rb print("hello\n") print("hello" * 4 + "\n") 9: sample5.rb 7

8 a = 3 print(a, "\n") a = 3 b = 4 print("a = ", a, ",b = ", b, "\n") 10: sample6.rb a = 2 b = 3 11: sample7.rb print(a, " + ", b, " = ", a + b, "\n") print(a, " - ", b, " = ", a - b, "\n") print(a, " * ", b, " = ", a * b, "\n") print(a, " / ", b, " = ", a / b, "\n") i = 1 print("i = ", i, "\n") print("i = ", i, "\n") print("i = ", i, "\n") 12: sample8.rb 13: sample9.rb # 1 30 i = 1 while i <= 30 print(i, "\n") 14: sample10.rb 8

9 i = 0 while i < 10 print(i + 1, " \n") 15: sample11.rb print("hello!") print("hello!") print("hello!") print("-----\n") i = 0 while i < 3 print("hello!!") 16: sample12.rb # * i = 1 while i <= 10 j = 1 while j <= i print("*") j = j + 1 print("\n") 17: sample13.rb 9

10 # 1 10 total = 0 total = print("total = ", total, "\n") sum = 0 i = 1 while i <= 10 sum = sum + i print("sum = ", sum, "\n") 18: sample14.rb sum = 0 i = 0 x = [10, 20, 35, 40, 50] while i < x.length sum = sum + x[i] print("sum = ", sum, "\n") 19: sample15.rb 10

11 puts(" ") puts(" ") n = gets.chomp.to_i if n > 120 print(" 1 ", n - 120, " \n") elsif n == 120 print(" 1 \n") else print(120 - n, " \n") 20: sample16.rb sushi = {" " => 100, " " => 300, " " => 200} print(sushi[" "], "\n") print(sushi[" "], "\n") print(sushi[" "], "\n") 21: sample17.rb def hello(name) print(name, " \n") hello(" ") hello(" ") hello(" ") 22: sample18.rb 11

12 ( ) sample19.rb Enter require sdl print("?") n = gets.chomp.to_i SDL.init(SDL::INIT_VIDEO) screen = SDL.setVideoMode(300, 600, 16, SDL::SWSURFACE ) # interval = 1 i = 0 while i < n loop_start = SDL.getTicks/ x = i % 3 * 100 y = (i /3)*50 chara = SDL::Surface.load( zu1.gif ) screen.put(chara, x, y) screen.updaterect(0, 0, 0, 0) print(" ", i + 1, "..."); sleep(1.8) if i >= 29 print(" ") break print("\n \n") sleep(6) print("\n\n\n") print(" \n") 23: sample19.rb 12

Windows Cygwin Mac 1 Emacs Ruby ( ) 1 Cygwin Bash Cygwin Windows Cygwin Cygwin Mac 1 Mac 1.2 2 ls 3 1 OS Linux 2 3 Enter ( ) 2

September 2016 1 Windows Cygwin Mac *1 Emacs Ruby 1 1.1 ( ) 1 Cygwin Bash Cygwin Windows Cygwin Cygwin Mac 1 Mac 1.2 *2 ls *3 *1 OS Linux *2 *3 Enter ( ) 2 ~/16:00:20> ls 2 2 ls ls -a ~/16:00:20> ls -a