a. “Testing can only show the presence of errors in a program. It cannot demonst
ID: 3579418 • Letter: A
Question
a. “Testing can only show the presence of errors in a program. It cannot demonstrate that there are no remaining faults”
Based on the statement above, explain why testing can only detect the presence of errors, not their absence.
b. Based on coding, answer the following question:
#include <iostream>
Using Namespace std;
double total,hours;
int main()
{
cout << "Charges for the first 3 hours = RM2.00" << endl;
cout << "Additional charges for the next hours = RM1.50"
<< endl; cout << "Maximum charges for any 24 hours = RM20.00"
<< endl; cout << " Please insert your hours = ";
cin >> hours;
if ((hours <=3) && (hours > 0))
cout << " Your total fee is RM2.00" << endl;
else
if ((hours>3) && (hours<=15))
{
total = 2.00+((hours-3)*1.50);
cout << " Your total fee is RM" << total << endl;
}
else
if (hours>15)
{
cout << " Your total fee is RM20.00" << endl;
}
else
cout << " Error! Please insert a valid number of hours" <<
endl;
system(“PAUSE”); return 0;
}
i. Draw a Flow Graph for the procedure in coding above
ii. Calculate the cyclomatic complexity of coding procedure
iii. Identify and list down all independent paths based on your answer in (i)
iv. Design a test case to force execution down each independent path. Use a table when designing your test cases
Explanation / Answer
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class GuiAccTest extends Frame implements ActionListener
come msg;
}
public void actionPerformed(ActionEvent ae)
}
class BankAccount
public void deposit(int amt)
public void withdraw(int amt) throws FundsInsufficientException
}
class FundsInsufficientException extends Exception
public String toString()
{
come "Your withdraw quantity ("+withdraw_amount+") is a smaller amount than the balance ("+balance+"). No withdrawal was recorded.";
}
}
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