[Solved] Identify the error in this code snippet:interface IShape { double Area(); } class Circle : IShape { public double Area() { return 3.14 * radius * radius; } } | C Sharp (C#)

C Sharp (C#) - Interfaces

Identify the error in this code snippet:

interface IShape {
  double Area();
}
class Circle : IShape {
  public double Area() {
    return 3.14 * radius * radius;
  }
}

AInterface method cannot return double

BMissing radius field or property in Circle class

CCircle class should not implement IShape

DArea method should be void

Step-by-Step Solution

Solution:

Step 1: Check Circle class members
The method Area uses 'radius' but no radius variable or property is declared in Circle.
Step 2: Understand interface method return type
Interface method returning double is valid; no error there.
Final Answer:
Missing radius field or property in Circle class -> Option B
Quick Check:
Undefined variable 'radius' causes error [OK]

Quick Trick: Check all variables used are declared [OK]

Common Mistakes:

MISTAKES

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