Swift
println("None") } } When we run the above program using playground, we get the following result: Instance physics is: solid physics Instance equation is: Hertz Instance physics is: Fluid Dynamics Instance formulae is: Giga Hertz Chemistry topics are: 'solid physics', Hertz Maths topics are: 'Fluid Dynamics',
Giga Hertz
Chemistry topics are: 'Thermo physics', Decibels Maths topics are: 'Astro Physics',
MegaHertz
Maths topics are: 'Differential Equations',
Cosine Series
Integer value is 12 Pi value is 3.14159 Example for Any Topics 'solid physics', Hertz
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