Calculator Conundrum
10 Points
error-handling
Instructions
In this exercise, you will be building error handling for a simple integer calculator. The calculator should support addition, multiplication, and division operations, returning the result as a formatted string. You will also implement error handling to address illegal operations and division by zero.
The goal is to have a working calculator that returns a string in the following format:
SimpleCalculator::calculate(16, 51, "+"); // => returns "16 + 51 = 67"
SimpleCalculator::calculate(32, 6, "*"); // => returns "32 * 6 = 192"
SimpleCalculator::calculate(512, 4, "/"); // => returns "512 / 4 = 128"1. Implement the calculator operations
The main function for this task will be SimpleCalculator::calculate, which takes three arguments: two integers and a ByteArray representing the operation.
Implement the following operations:
- Addition with the
+symbol - Multiplication with the
*symbol - Division with the
/symbol
2. Handle illegal operations
If the operation symbol is anything other than +, *, or /, the calculator should either panic or return an error:
- If the operation is an empty string, panic with a
ByteArrayerror message"Operation cannot be an empty string". - For any other invalid operation, return
Result::Err("Operation is out of range").
SimpleCalculator::calculate(100, 10, "-"); // => returns Result::Err("Operation is out of range")
SimpleCalculator::calculate(8, 2, ""); // => panics with "Operation cannot be an empty string"3. Handle errors when dividing by zero
When attempting to divide by 0, the calculator should panic with an error message indicating that division by zero is not allowed.
The returned result should be a felt252 value of 'Division by zero is not allowed'.
SimpleCalculator::calculate(512, 0, "/"); // => panics with 'Division by zero is not allowed'Calculator Conundrum
10 Points
error-handling
Instructions
In this exercise, you will be building error handling for a simple integer calculator. The calculator should support addition, multiplication, and division operations, returning the result as a formatted string. You will also implement error handling to address illegal operations and division by zero.
The goal is to have a working calculator that returns a string in the following format:
SimpleCalculator::calculate(16, 51, "+"); // => returns "16 + 51 = 67"
SimpleCalculator::calculate(32, 6, "*"); // => returns "32 * 6 = 192"
SimpleCalculator::calculate(512, 4, "/"); // => returns "512 / 4 = 128"1. Implement the calculator operations
The main function for this task will be SimpleCalculator::calculate, which takes three arguments: two integers and a ByteArray representing the operation.
Implement the following operations:
- Addition with the
+symbol - Multiplication with the
*symbol - Division with the
/symbol
2. Handle illegal operations
If the operation symbol is anything other than +, *, or /, the calculator should either panic or return an error:
- If the operation is an empty string, panic with a
ByteArrayerror message"Operation cannot be an empty string". - For any other invalid operation, return
Result::Err("Operation is out of range").
SimpleCalculator::calculate(100, 10, "-"); // => returns Result::Err("Operation is out of range")
SimpleCalculator::calculate(8, 2, ""); // => panics with "Operation cannot be an empty string"3. Handle errors when dividing by zero
When attempting to divide by 0, the calculator should panic with an error message indicating that division by zero is not allowed.
The returned result should be a felt252 value of 'Division by zero is not allowed'.
SimpleCalculator::calculate(512, 0, "/"); // => panics with 'Division by zero is not allowed'