Swift
Another Example struct markStruct{ var mark1: Int var mark2: Int var mark3: Int
init(mark1: Int, mark2: Int, mark3: Int){ self.mark1 = mark1 self.mark2 = mark2 self.mark3 = mark3 } }
var fail = markStruct(mark1: 34, mark2: 42, mark3: 13)
println(fail.mark1) println(fail.mark2) println(fail.mark3) When we run the above program using playground, we get the following result: 34 42 13 The structure 'markStruct' is defined first with its members mark1, mark2 and mark3. Now the variables of member classes are initialized to hold integer values. Then the copy of the structure members are created with 'self' Keyword. Once the copy of the structure members are created structure block with its parameter marks are passed to 'marks' variable which will now hold the students marks. Then the marks are printed as 98, 96, 100. Next step for the same structure members another instance named 'fail' is used to point the same structure members with different marks. Then the results are now printed as 34, 42, 13. This clearly explains that structures will have a copy of the member variables then pass the members to their upcoming function blocks.
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