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HOW TO DECLARE VARIABLE IN RUBY PROGRAMMING LANGUAGE

You can manipulate variables in exactly the same way that you would manipulate the objects that they represent.

Ruby Gem

'>>var1=7 =>7 >>var2=4 =>4

>>var3 = var1 + var 2 =>11

>>var = "hello" => "hello" >> var4 = var4 * var2 => hellohellohellohellohello

>> num1 = 2 + 4 + 6 + 8 => 20 >> num1 = num1/5 => 24 >> num2 = num2 - num1 =>20

num1 = num1 / 5 num2 = num2 - num1 These kinds of expressions are very common, so Ruby offers you some shortcuts:

Example Shortcut Meaning var = var + 2 var += 2 Add 2 to var var = var - 3 var -= 3 Subtract 3 from var var = var * 6 var *= 6 Multiply var by 6 var = var / 2 var /= 2 Divide var by 2 var = var** 3 var **=3 Cube var var = var % 4 var %= 4 var modulo 4

http://myblogpaopao86.blogspot.com/ By: John Paul Mamaril

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