ANSWER :

16.1 Computational Errors:

Catching Exceptions using try and except blocks

there is a chance of runtime error while doing some program. One of the possible reasons is wrong input. For example, consider the following code segment -

a=int(input("Enter a:"))

b=int(input("Enter b:"))

c=a/b

print(c)

When you run the above code, one of the possible situations would be -

Enter a:12

Enter b:0

Traceback (most recent call last):

File " E:/BE CS/CSE/17-Scheme/6th Sem/OPEN_ELECTIVE/17CS664_PAP/SOLVED_QB/program/mod 2 py code/16.1_div_by_0.py", line 154, in <module>

c=a/b

ZeroDivisionError: division by zero

For the end-user, such type of system-generated error messages is difficult to handle. So the code which is prone to runtime error must be executed conditionally within try block. The

try

block contains the statements involving suspicious code and the

except

block contains the possible remedy (or instructions to user informing what went wrong and what could be the way to get out of it). If something goes wrong with the statements inside

try

block, the

except

block will be executed. Otherwise, the except-block will be skipped. Consider the example -

Handling an exception using try is called as

catching

an exception. In general, catching an exception gives the programmer to fix the probable problem, or to try again or at least to end the program gracefully.

16.2 Program

ANSWER :

Refer 1^st & 4^th Question & Answer or Click Here

ANSWER :

Refer 3^rd Question & Answer or Click Here

ANSWER :

ANSWER :

Refer 12^th Question & Answer or Click Here