What statement regarding the structure of strings is inaccurate?

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BlackTom AI · Accepted Answer

When evaluating the statements about the structure of strings, it helps to recall standard properties of strings in most programming contexts.
Option 1: 'A string's length may be calculated by the len() function.' This is true in many languages (for example, Python uses len(s) to obtain the number of characters in s). The idea that length is computable is a fundamental aspect of string objects. 
Option 2: 'A string is a sequence of zero or more characters.' This is also true; strings can be empty (length zero) or contain any number of characters, and they are ordered sequences. The notion of sequence implies positional indexing and order. 
Option 3: 'A string cannot be decomposed into more primitive parts.' This statement is false in most formal understandings of strings. Strings are typically built from individual characters, and many operations (like iterating over characters, slicing, or concatenation) treat strings as collections of primitives (characters). In other words, a string can be decomposed into its constituent characters. The claim that it cannot be decomposed contradicts the common, underlying representation of strings as sequences of characters. 
Option 4: 'A string is an immutable data structure.' In many languages (such as Python, Java, and many functional paradigms), strings are immutable: once created, their contents cannot be changed in place. Any operation that appears to modify a string usually yields a new string. This statement aligns with typical immutability properties of strings. 
Considering these points, the statement in Option 3 stands out as inaccurate because it denies the routinely acknowledged decomposability of strings into individual characters. The other options describe accurate and commonly accepted characteristics: calculable length, zero-or-more-character sequences, and immutability.

ISOM 316 2 Coding for Business - Fall 2025 MidTerm Exam 2

What statement regarding the structure of strings is inaccurate?

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