What is the data-type of the following expression?'2.9'Select one:intcharstringfloat

1. ### Break Down the Problem

We need to identify the data type of the expression '2.9'.

2. ### Relevant Concepts

In programming, data types are categories that specify what type of values a variable can hold. The given options are:

• int: Integer, a whole number without a decimal point.
• char: A single character, usually enclosed in single quotes.
• string: A sequence of characters, enclosed in quotes.
• float: A floating-point number, which includes decimal points.

3. ### Analysis and Detail

The expression is enclosed in single quotes, which indicates that it is treated as a string rather than a number. Even though 2.9 resembles a float or a decimal value, the quotes designate it as textual data.

4. ### Verify and Summarize

Given the structure of the expression, it does not qualify as an integer (int), character (char), or float (float) due to the quotes. Therefore, it is categorized as a string.

Final Answer

The data-type of the expression '2.9' is string.