Interactive Ruby

Ruby offers easy-to-use interactive functionality, which is referred to as interactive ruby. (IRB).

irb
3.0.0 :001 > puts "Hi!"
Hi!
 => nil                                      
3.0.0 :002 > print "Hi!"
Hi! => nil

99**45
 => 636185486063871224577278269599438356286750793148313662587196470579383532879142704680104499

The large operation can easily manipulate using the ruby.

Some Math Operations:

• Adds numbers: +

 25+26
 => 51

• Subtracts the number from another number: -

 59-25
 => 34

• Divide the number with another number: /

65/5
 => 13

• Multiply two numbers: *

84*45
 => 3780

• Finds a number raised to the power of another: **

89**2
 => 7921

• Findings: the remainder: %

99%2
 => 1

• Adds and assigns a value to a variable: +=

 a = 0
 => 0 
3.0.0 :012 > a += 25
 => 25

• Subtracts and assigns a value to a variable: -=

b = 20
 => 20 
3.0.0 :014 > b -= 5
 => 15

• Multiply and assigns a value to a variable: *=

 c = 8
 => 8 
3.0.0 :016 > c *= 2
 => 16

• Divides and assigns a value to a variable: /=

d = 15
 => 15 
3.0.0 :021 > d /= 5
 => 3

• Finds the remainder and assigns it to a variable: %=

e = 75
 => 75 
3.0.0 :023 > e %= 10
 => 5

Space doesn’t matter:

5 +                 3
 => 8

Decimals:

Ruby must perform a floating-point or decimal calculation rather than an integer one.

10/3
 => 3 
3.0.0 :027 > 10.0/3
 => 3.3333333333333335