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What happens when you concatenate a string and an integer using the + operator in C#?

easy🧠 Conceptual Q1 of 15
C Sharp (C#) - Strings and StringBuilder
What happens when you concatenate a string and an integer using the + operator in C#?
AA compile-time error occurs
BThe integer is converted to a string and concatenated
CThe integer is added numerically to the string's length
DThe program throws a runtime exception
Step-by-Step Solution
Solution:
  1. Step 1: Understand string and integer concatenation

    In C#, when you use the + operator between a string and an integer, the integer is automatically converted to a string.
  2. Step 2: Result of concatenation

    The integer as a string is appended to the original string, forming a new combined string.
  3. Final Answer:

    The integer is converted to a string and concatenated -> Option B
  4. Quick Check:

    String + int concatenation = integer converted to string [OK]
Quick Trick: Numbers convert to strings when concatenated with strings [OK]
Common Mistakes:
MISTAKES
  • Expecting a compile-time error
  • Thinking integers add numerically to string length
  • Assuming runtime exceptions occur

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