Question

2. What is the output of the following code fragment?

n = 1;
while (n <= 5)
{
n++;
cout << n << ' ';

a.1 2 3 4 5

b. 1 2 3 4

c. 1 1 1 forever

d. 2 3 4 5

e. 2 3 4 5 6

3. What is the termination condition for the following While loop?

while (beta > 0 && beta < 10)
{
cout << beta << endl;
cin >> beta;
}

a. beta > 0 && beta < 10

b. beta >= 0 && beta <= 10

c. beta < 0 || beta > 10

d. beta <= 0 || beta >= 10

4. Loop ____________________ is the moment that the flow of control reaches the first statement inside the loop body.

5. True or False? In testing a loop, one tries to devise data sets that leave the files in improper states that violate either the loop postcondition (an assertion that must be true immediately after the loop exit) or the postcondition of the module containing the loop.

6. These three common programming tasks _________________ __________________ _____________________ are often performed in a loop.

7. Given the input data

25 10 6 -1

what is the output of the following code fragment? (All variables are of type int.)

sum = 0;
cin >> number;
while (number != -1)
{
cin >> number;
   sum = sum + number;
}
cout << sum << endl;

a. 15

b. 41

c. 40

d. 16

e. no output--this is an infinite loop

8. A(n) ____________________ is a counter variable that is incremented each time a particular event occurs.

10. A(n) ____________________-controlled loop is an event-controlled loop whose event is the attempt to read past the end of an input file.

Answer 1

Answer 2: 1 2 3 4 5
as n is starting from 1 to <=5

Answer 3:D
if beta crosses 10 or comes down below 0 than it will terminate

Answer 4:
initiliazation
Answer 5:True
Answer 6: matrix operations,searching and sorting
Answer 7: 40
as it adds 25+10+6
also it adds -1 later loop break

Answer 8:iteration counter
Answer 10:event

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