[Solved] What will be the output of the following Swift code?func add(_ a: Int, _ b: Int) -> Int { a + b } var mathOperation: (Int, Int) -> Int = add print(mathOperation(3, 4)) | Swift

Swift - Functions

What will be the output of the following Swift code?

func add(_ a: Int, _ b: Int) -> Int { a + b }
var mathOperation: (Int, Int) -> Int = add
print(mathOperation(3, 4))

A7

B34

CError: Cannot assign function

D0

Step-by-Step Solution

Solution:

Step 1: Understand function assignment
The function 'add' matches the type (Int, Int) -> Int, so it can be assigned to 'mathOperation'.
Step 2: Evaluate the function call
Calling mathOperation(3, 4) calls add(3, 4), which returns 3 + 4 = 7.
Final Answer:
7 -> Option A
Quick Check:
Function call result = 7 [OK]

Quick Trick: Assign matching function types to variables to call them [OK]

Common Mistakes:

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