Which function is used to convert a string to an integer in Python?

• A. str()
• B. float()
• C. int()
• D. convert()

Answer: (C)

The function used to convert a string to an integer in Python is int(). This built-in function takes a string representation of an integer (like "123") and converts it into an actual integer type (123). For example, using int("123") will yield the integer value 123.

The str() function is designed to convert other data types into strings, which is the opposite of what is needed in this context. In contrast, the float() function is used for converting strings into floating-point numbers, not integers. Lastly, convert() is not a built-in function in Python for data type conversion, making it an invalid choice.

Therefore, int() is the appropriate function to use when you want to convert a string to its equivalent integer value.