Which function converts a string to uppercase?

Which function converts a string to uppercase?

• A. Upper
• B. Lower
• C. InitCap
• D. Position

Answer: (A)

The function being tested is the one that turns all letters in a string into uppercase. When you apply this function to a string, every alphabetic character becomes uppercase while other characters stay the same. For example, applying it to 'Database' yields 'DATABASE'. This is exactly what converting to uppercase means. The other options do different things: one converts all letters to lowercase, another capitalizes the first letter of each word (sometimes leaving the rest lowercase), and the last finds the position of a substring within a string rather than changing the case.

The function being tested is the one that turns all letters in a string into uppercase. When you apply this function to a string, every alphabetic character becomes uppercase while other characters stay the same. For example, applying it to 'Database' yields 'DATABASE'. This is exactly what converting to uppercase means.

The other options do different things: one converts all letters to lowercase, another capitalizes the first letter of each word (sometimes leaving the rest lowercase), and the last finds the position of a substring within a string rather than changing the case.