[Solved] What does the following C# code do?int age = 25;string message = $"I am {age} years old."; - Ans: Inserts the value of age into the string at the placeholder. | C Sharp (C#)

C Sharp (C#) - Strings and StringBuilder

What does the following C# code do?

int age = 25;
string message = $"I am {age} years old.";

AConcatenates the string and integer without formatting.

BInserts the value of <code>age</code> into the string at the placeholder.

CCauses a syntax error because of the dollar sign.

DCreates a string with the text including curly braces literally.

Step-by-Step Solution

Solution:

Step 1: Understand string interpolation syntax
The dollar sign $ before the string allows inserting variables inside curly braces.
Step 2: Identify variable insertion
The variable age is inserted where {age} appears, replacing the placeholder with its value.
Final Answer:
Inserts the value of age into the string at the placeholder. -> Option B
Quick Check:
String interpolation = Insert variable value [OK]

Quick Trick: Look for $ and {variable} to spot interpolation [OK]

Common Mistakes:

MISTAKES

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