What is the use of a raise statement? Write a code to accept two numbers and display the quotient. Appropriate exception should be raised if the user enters the second number (denominator) as zero (0).
The raise statement is used to explicitly throw an exception in a program. It can raise either a built-in exception or a user-defined exception. When the raise statement is executed, the normal program flow stops and the statement following the raise statement will not be executed. The control transfers to the nearest exception handler.
python try: numerator = int(input("Enter the numerator: ")) denom = int(input("Enter the denominator: ")) if denom == 0: raise ZeroDivisionError quotient = numerator / denom print("Quotient:", quotient) except ZeroDivisionError: print("Denominator as ZERO... not allowed")
In this code, when the user enters the second number (denominator) as zero, the raise statement explicitly raises a ZeroDivisionError exception. The except block then catches this exception and displays the message "Denominator as ZERO... not allowed".
Explanation
The textbook explains that the raise statement is used to throw an exception, which can be either a built-in exception or a user-defined one. The context shows that when a raise statement is executed, the following statement will not be executed. For the code, I adapted Program 1-2 from the context but added an explicit raise statement to raise ZeroDivisionError when the denominator is zero, as specifically asked in the question.
Solution Steps
Step 1: Explain that raise statement throws exceptions (built-in or user-defined)
Step 2: Write code that accepts two numbers using input()
Step 3: Add condition to check if denominator is zero
Step 4: Use raise ZeroDivisionError when denominator is zero
Step 5: Handle the exception using try...except block