Have a look at the man page for printf:
man 3 printf
Answer:
price float(price)
Explanation:
There are four basic type of data type use in the programming to declare the
variable.
1. int: it is used for integer values.
2. float: it is used for decimal values.
3. char: it is used for character values
4. Boolean: it is used for true or false.
in the question, the one option contain the data type float (price float(price)). So, it store the value in decimal.
price int(price): it store the value in integer.
price decimal(price): it is wrong declaration of variable. their is no data type in the programming which name is decimal.
price price(decimal): it is wrong declaration of variable. their is no data type in the programming which name is price.
The number system is what is use globally as are way of counting the total number of digits is 9 because you can make any number with characters 1-9
