[Solved] What will this code print? interface ICalc { int Add(int a, int b) => a + b; } class Calc : ICalc { public int Add(int a, int b) => a * b;... | C Sharp (C#)

C Sharp (C#) - Interfaces

What will this code print? interface ICalc { int Add(int a, int b) => a + b; } class Calc : ICalc { public int Add(int a, int b) => a * b; } class Program { static void Main() { ICalc calc = new Calc(); Console.WriteLine(calc.Add(2, 3)); } }

A5

B6

CCompile error

DRuntime error

Step-by-Step Solution

Solution:

Step 1: Understand method implementations
Interface ICalc has default Add method returning sum. Class Calc overrides Add to return product.
Step 2: Identify method called at runtime
Calc's Add method overrides default, so calling Add(2,3) returns 2*3 = 6.
Final Answer:
6 -> Option B
Quick Check:
Override method output = D [OK]

Quick Trick: Class override replaces default interface method [OK]

Common Mistakes:

MISTAKES

Assuming default method runs despite override
Confusing sum and product results
Expecting compile or runtime errors

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What will this code print?

Step 1: Understand method implementations

Step 2: Identify method called at runtime

Final Answer:

Quick Check:

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