Which operator is used for string comparison?

• A. -eq
• B. -ne
• C. -like
• D. -lt

Answer: (C)

The operator used for string comparison is indeed "like." This operator is specifically designed to compare strings, allowing you to check if one string matches a pattern represented by another string. It is often used in scripting and programming languages to perform comparisons that involve wildcards. For example, if you wanted to see if a variable contains a certain substring or follows a specific format, you would use the "like" operator to facilitate that comparison.

In many languages, "like" can also support wildcard characters that can match multiple characters (e.g., '*') or a single character (e.g., '?'), making it versatile for complex string matching scenarios. This is a key capability when dealing with data that may not strictly match exact string values but still needs to be compared for certain characteristics or patterns.

The other operators mentioned serve different purposes: for instance, "equal" checks for numerical equivalency, "not equal" determines if values do not match, and "less than" is used for numeric comparisons, not string evaluations. Hence, "like" stands out as the operator tailored specifically for assessing string conditions and patterns.