irb(main):001:0> puts 'Buenos Dias Lore'
Buenos Dias Lore
=> nil
irb(main):002:0> ^C
irb(main):002:0> 'Buenos dias Lore'
=> "Buenos dias Lore"
irb(main):003:0>
irb(main):004:0* composer = mozart
NameError: undefined local variable or method `mozart' for main:Object
        from (irb):4
        from C:/Ruby24/bin/irb.cmd:19:in `<main>'
irb(main):005:0> composer = 'mozart'
=> "mozart"
irb(main):006:0> puts composer + was a "da bomb" in his day.'
irb(main):007:0' ^C
irb(main):007:0> composer = 'Mozart'
=> "Mozart"
irb(main):008:0> puts composer +'was "da bomb" in his day.'
Mozartwas "da bomb" in his day.
=> nil
irb(main):009:0> puts horas del dia = '365*24'
NoMethodError: undefined method `del' for main:Object
        from (irb):9
        from C:/Ruby24/bin/irb.cmd:19:in `<main>'
irb(main):010:0> puts horas_del_dia = 365*24
8760
=> nil
irb(main):011:0> puts horas_del_dia
8760
=> nil
irb(main):012:0> puts 'Horas anuales' + horas_del_dia
TypeError: no implicit conversion of Integer into String
        from (irb):12:in `+'
        from (irb):12
        from C:/Ruby24/bin/irb.cmd:19:in `<main>'
irb(main):013:0> horas_del dia = '365*24'
NoMethodError: undefined method `horas_del' for main:Object
        from (irb):13
        from C:/Ruby24/bin/irb.cmd:19:in `<main>'
irb(main):014:0> horas_del_dia = '365*24'
=> "365*24"
irb(main):015:0> horas_del_dia = 365*24
=> 8760
irb(main):016:0>
irb(main):017:0* horas_del_dia + 'resultado'
TypeError: String can't be coerced into Integer
        from (irb):17:in `+'
        from (irb):17
        from C:/Ruby24/bin/irb.cmd:19:in `<main>'
irb(main):018:0> puts 'Resultado' + horas_del_dia
TypeError: no implicit conversion of Integer into String
        from (irb):18:in `+'
        from (irb):18
        from C:/Ruby24/bin/irb.cmd:19:in `<main>'
irb(main):019:0> puts horas_del_dia.toS
NoMethodError: undefined method `toS' for 8760:Integer
Did you mean?  to_s
        from (irb):19
        from C:/Ruby24/bin/irb.cmd:19:in `<main>'
irb(main):020:0>
irb(main):021:0* puts horas_del_dia.to_s
8760
=> nil
irb(main):022:0>
irb(main):023:0* var1=2
=> 2
irb(main):024:0> var2='5'
=> "5"
irb(main):025:0> puts var1.to_s + var2
25
=> nil
irb(main):026:0> puts 'Horas del dia =' + horas_del_dia
TypeError: no implicit conversion of Integer into String
        from (irb):26:in `+'
        from (irb):26
        from C:/Ruby24/bin/irb.cmd:19:in `<main>'
irb(main):027:0> horas_del_dia
=> 8760
irb(main):028:0> puts 'Horas anuales=' + horas_del-dia.to_s
NameError: undefined local variable or method `horas_del' for main:Object
Did you mean?  horas_del_dia
        from (irb):28
        from C:/Ruby24/bin/irb.cmd:19:in `<main>'
irb(main):029:0> var1=2
=> 2
irb(main):030:0> var2='5
irb(main):031:0' Var2='5'
irb(main):032:0' puts var2.to_i + Var1
irb(main):033:0'
irb(main):034:0'
irb(main):035:0' ^C
irb(main):035:0> puts var1
2
=> nil
irb(main):036:0> var2='5'
=> "5"
irb(main):037:0> puts var2.to_i + var1
7
=> nil
irb(main):038:0> puts'Horas anuales' + horas_del_dia.to_s
Horas anuales8760
=> nil
irb(main):039:0> puts'Horas anuales = 'horas_del_dia.to_s
SyntaxError: (irb):39: syntax error, unexpected tIDENTIFIER, expecting end-of-input
Horas anuales = 'horas_del_dia.to_s
                              ^
        from C:/Ruby24/bin/irb.cmd:19:in `<main>'
irb(main):040:0> puts'Horas anuales= ' +horas_del_dia.to_s
Horas anuales= 8760
=> nil
irb(main):041:0> puts '15.to_f
irb(main):042:0' ^C
irb(main):042:0> puts'15'.to_f
15.0
=> nil
irb(main):043:0> puts'99.999'.to_f
99.999
=> nil
irb(main):044:0> puts'99.999'.to_i
99
=> nil
irb(main):045:0> puts ' '

=> nil
irb(main):046:0> puts'5 is my favorite number'.to_i
5
=> nil
irb(main):047:0> puts'Who asked you about 5?'.to_i
0
=> nil
irb(main):048:0> puts 3.to_i
3
=> nil
irb(main):049:0>
irb(main):050:0* puts gets
is there an echo here?
is there an echo here?
=> nil
irb(main):051:0> is there an echo here?
NoMethodError: undefined method `here?' for main:Object
        from (irb):51
        from C:/Ruby24/bin/irb.cmd:19:in `<main>'
irb(main):052:0> puts gets
Unbreakable
Unbreakable
=> nil
irb(main):053:0> puts 'Hello there, and what\'s your name?'
Hello there, and what's your name?
=> nil
irb(main):054:0> name = gets
puts 'Your name is ' + name + '? What a lovely name!'
=> "puts 'Your name is ' + name + '? What a lovely name!'\n"
irb(main):055:0> puts 'pleased to meet you, ' + name + '.
irb(main):056:0' ^C
irb(main):056:0> puts 'Hello There, and what\'s your name?'
Hello There, and what's your name?
=> nil
irb(main):057:0> name = gets.chomp
puts 'Your name is' + name + '? What a lovely name!'
=> "puts 'Your name is' + name + '? What a lovely name!'"
irb(main):058:0>