Simple Calculator
10 Points
exceptions
Instructions
In this exercise you will be building error handling for a simple calculator.
The goal is to have a working calculator that returns a string with the following pattern: 16 + 51 = 67, when provided with arguments 16, 51 and +.
SimpleCalculator.calculate(16, 51, "+")
# => "16 + 51 = 67"
SimpleCalculator.calculate(32, 6, "*")
# => "32 * 6 = 192"
SimpleCalculator.calculate(512, 4, "/")
# => "512 / 4 = 128"1. Handle the code that may raise errors within the method calculate
The main method for implementation in this task will be the class method SimpleCalculator.calculate() method.
It takes three arguments.
The first two arguments are numbers on which an operation is going to be conducted.
The third argument is of type string and for this exercise it is necessary to implement the following operations:
- addition using the
+string - multiplication using the
*string - division using the
/string
2. Handle illegal operations
Update the SimpleCalculator.calculate() method to raise an UnsupportedOperation exception for unknown operation symbols.
SimpleCalculator.calculate(1, 2, '-')
# => Raises an UnsupportedOperationNote
In this exercise, you are expected to define the UnsupportedOperation exception for a specific scope.
3. Handle invalid arguments
Update the SimpleCalculator.calculate() method to raise an ArgumentError exception for invalid argument types.
SimpleCalculator.calculate(1, '2', '*')
# => Raises an ArgumentError4. Handle DivideByZero exceptions
Update the SimpleCalculator.calculate() to handle ZeroDivisionError exceptions.
The handling code should return the string with the content Division by zero is not allowed..
Any other exception should not be handled by the SimpleCalculator.calculate() method.
SimpleCalculator.calculate(512, 0, "/")
# => returns "Division by zero is not allowed."Simple Calculator
10 Points
exceptions
Instructions
In this exercise you will be building error handling for a simple calculator.
The goal is to have a working calculator that returns a string with the following pattern: 16 + 51 = 67, when provided with arguments 16, 51 and +.
SimpleCalculator.calculate(16, 51, "+")
# => "16 + 51 = 67"
SimpleCalculator.calculate(32, 6, "*")
# => "32 * 6 = 192"
SimpleCalculator.calculate(512, 4, "/")
# => "512 / 4 = 128"1. Handle the code that may raise errors within the method calculate
The main method for implementation in this task will be the class method SimpleCalculator.calculate() method.
It takes three arguments.
The first two arguments are numbers on which an operation is going to be conducted.
The third argument is of type string and for this exercise it is necessary to implement the following operations:
- addition using the
+string - multiplication using the
*string - division using the
/string
2. Handle illegal operations
Update the SimpleCalculator.calculate() method to raise an UnsupportedOperation exception for unknown operation symbols.
SimpleCalculator.calculate(1, 2, '-')
# => Raises an UnsupportedOperationNote
In this exercise, you are expected to define the UnsupportedOperation exception for a specific scope.
3. Handle invalid arguments
Update the SimpleCalculator.calculate() method to raise an ArgumentError exception for invalid argument types.
SimpleCalculator.calculate(1, '2', '*')
# => Raises an ArgumentError4. Handle DivideByZero exceptions
Update the SimpleCalculator.calculate() to handle ZeroDivisionError exceptions.
The handling code should return the string with the content Division by zero is not allowed..
Any other exception should not be handled by the SimpleCalculator.calculate() method.
SimpleCalculator.calculate(512, 0, "/")
# => returns "Division by zero is not allowed."