├── Hello_World.rb
├── Sum.rb
└── Swap.rb


/Hello_World.rb:
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1 | #print hello world
2 | 
3 | puts "Hello World"
4 | 


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/Sum.rb:
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 1 | # get number 1 from user and store in num1 variable
 2 | puts "Enter first value: "
 3 | num1=gets.chomp.to_i
 4 | 
 5 | # get number 2 from user and store in num1 variable
 6 | puts "Enter second value: "
 7 | num2=gets.chomp.to_i
 8 | 
 9 | # formula of sum of two number
10 | sum=num1+num2
11 | 
12 | # print sum of two numbers
13 | puts "The sum = #{sum}"
14 | 
15 | 
16 | 
17 | output 
18 | first value = 2 
19 | second value = 2
20 | the sum = 4
21 | 


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/Swap.rb:
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 1 | # swap two variable in ruby
 2 | class SwapExample
 3 | 
 4 |     def swapNumbers
 5 |         a = 3
 6 |         b = 6
 7 | 
 8 |         puts("A " + a.to_s)
 9 |         puts("B " s+ b.to_s)
10 | 
11 | 
12 |         # Swapping of two numbers using temp variable
13 | 
14 | 
15 | 
16 | 
17 |         temp = a
18 |         a = b
19 |         b = temp
20 | 
21 | 
22 | 
23 |         puts("A " + a.to_s)
24 |         puts("B " + b.to_s)
25 |     end
26 | end
27 | 
28 | obj = SwapExample.new
29 | obj.swapNumbers
30 | 


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