What syntax is used to convert an input from string to integer?

The correct syntax to convert an input from a string to an integer in Python is using the int() function. When you call input(), it always returns a value as a string, regardless of what the user types. To perform operations that require numerical values, such as arithmetic calculations, you need to convert this string representation of a number into an actual integer.

Using the int() function accomplishes this conversion. For example, if a user inputs "42", int(input()) will convert that input to the integer 42, allowing you to perform mathematical operations on it as needed.

In contrast, the other options do not perform the desired conversion to an integer:

• The float() function converts a string to a floating-point number, which is not what is asked for.

• The str() function simply converts the input to a string again, which doesn’t achieve the goal.

• The number() function does not exist in Python; therefore, it cannot be used for any conversion.

Thus, using int(input()) is the appropriate and correct way to ensure that the input is converted into an integer for further processing.