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Examine the following code snippet:

medium📝 Debug Q6 of 15
C Sharp (C#) - Classes and Objects
Examine the following code snippet:
class Employee {
  public string id;
  public Employee(string i) { id = i; }
}

Employee e = new Employee();
Console.WriteLine(e.id);

What is the issue with this code?
AThe class Employee cannot have a constructor with parameters.
BThe constructor requires a string argument but none was provided.
CThe variable e is not declared properly.
DThe Console.WriteLine statement is missing parentheses.
Step-by-Step Solution
Solution:
  1. Step 1: Check the constructor definition

    The class Employee has a constructor that requires a string parameter.
  2. Step 2: Analyze the object instantiation

    The code attempts to create an Employee object with new Employee() but does not provide the required string argument.
  3. Step 3: Identify the error

    This causes a compile-time error because no matching constructor exists without parameters.
  4. Final Answer:

    The constructor requires a string argument but none was provided. -> Option B
  5. Quick Check:

    Constructor parameters must match during instantiation. [OK]
Quick Trick: Constructor parameters must be supplied when required [OK]
Common Mistakes:
MISTAKES
  • Trying to call a parameterized constructor without arguments
  • Assuming default constructor exists when one is defined with parameters
  • Ignoring compiler errors about missing arguments

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