Casting

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Which term describes converting a value from one data type to another data type?: Casting
What does the casting function int() do when it is applied to the string '42'?: It converts the string into an integer for use in calculations
Which casting function converts a string such as '4.52' into a real number?: The float() function, which keeps the decimal part
What is meant by the casting function str()?: It converts a value into a string so that it can be joined to text
What is meant by truncating a real number when it is cast to an integer?: The fractional part is cut off, so 4.99 becomes 4
Which value gives False when it is cast with bool()?: The empty string
A variable called score holds the integer 10. The statement float(score) runs on its own. What does score hold afterwards?: The integer 10
A value typed in by the user is stored as a string. Why must int() be used on it before it is used in a calculation?: The value is a string, so it must become a number for arithmetic
What is the value of bool('False')?: True
What is the result of int('12') + int('3')?: 15
What is the value of float(7)?: 7.0
Which of these will cause the program to stop with an error when int() is used on it?: The string '3.5'
A program runs the code int('7') + '3'. What happens?: The program stops with an error
A variable called answer holds the string 'False'. A program needs the Boolean value False. What should it do?: Compare answer with the text 'False'
The variable price holds the string '2.5'. What is the value of float(price) + 2?: 4.5
What is the result of str(12) + str(3)?: The text '123'

Casting

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