Question

13.5 miniLab:JWC -Handling (Daedline by 11:59PM 04/16/19) ing code using exception-handling constructs. When there is negative input for the weight,then it should show the with a newline). For the two tests below, you need to get the exactly same test output to get the full point Complete err Invalid weight Cannot show weight info When there is positive input for the weight, then it should show the following (The following example is the case when you type 120) Your weight: 120

C++

Answer 1

Dear student,

An exception is a problem that occurs during the program execution. We can call Exception as a Runtime Error. In particular to C++, we have several blocks to support the Exception Handling such as Try, Catch and Throw, etc.

Try block -- WIll anticipate the exception

Throw Block --- will throw the Exception that will be caught by some Catch block

Catch Block --- Will catch the exception

Exception Handling Program:

#include <iostream>
using namespace std;

int main()
{
int x;

cout<<"Enter the weight"<<endl;
cin>>x; // Read the weight information

// Try and Catch blocks are used for Exception handling
try

{

   if (x < 0) // checking out the weight is negative or not
   {
   cout << "Invalid weight"<< endl;
       throw x; // If exception caught, it will be thrown and some catch statement has to catch it
   }
else
cout << "Your weight: "<<x;
}
catch (int x ) // catches the exception thrown by above throw statement
{
   cout << "Cannot show weight info \n";
}
return 0;
}

Output:

Case 1: When the input weight is negative, it has to be handled by exception and should display the appropriate error message

Enter the weight 25 Invalid weight Cannot show weight info

Case 2: When the input weight is Not Negative

Enter the weight 10 Your weight: 10

Thank you, If any doubts feel free to comment.