Write an if statement that assigns 20 to the variable y and assigns 40 to the variable z if the variable x is greater than 100.
Write an if statement that assigns 0 to the variable b and assigns 1 to the variable c if the variable a is less than 10.
Write an if-else statement that assigns - to the variable b if the variable a is less than 10. Otherwise, it should assign 99 to the variable b.