C++

1- What is decomposition?. A- Ignoring unnecessary details in a problem. B- Generalizing a problem so it can be solved more easily. C- Breaking down complex problem or system into smaller more manageable sub-problems. D- Prioritizing tasks within a program and determining the order in which to perform them.

2- Which of the following statement is NOT correct about flowchart?. A- They never contain cycles that is you can never get to the same instruction twice by following the next instruction edge. B- A parallelogram indicates a special type of instruction called an input/output instruction. C- Using diamond to direct the next instruction based on the value of some variable. D- If there is a directed edge from instruction 1 to instruction 2, then instruction 2 must be performed after instruction1.

3- Which of the following is correct about data representation and abstraction?. A- Determine what data is required. B- Breaking the problem into smaller sub problems. C- Looking for pattern in the data. D- All of the above.

4- Assuming the input list is not empty and text x and y are both initially 0. What is the output of this algorithm?. A- The number of items in the list. B- The average of non-negative numbers in the list. C- The number of non-negative numbers in the list. D- The sum of the non-negative numbers in the list.

5- Data representation and abstraction is the pinnacle of computational thinking. A- True. B- False.

6- What is the output of the following code? double x=25.8; cout<<”variable x is stored in “<<sizeof(x)<<” bytes\n”; return 0;. A- Variable x is stored in 1 bytes. B- Variable x is stored in 2 bytes. C- Variable x is stored in 4 bytes. D- Variable x is stored in 8 bytes.

7- What is the output of the following code? int a=6; int b=3; int c=4; double result; c-=2 result=3*(a-2)/double(b+5+c); cout<<result<<endl;. A- 1. B- 1.2. C- 1.6. D- 0.75.

8- What is the output of the following code? int age=42; int experience=5; bool ispunished=false; bool is promoted=(age>35 && experience>=5 && !isPunished); cout<<isPromoted<<endl;. A- 1. B- 0. C- True. D- Flase.

9- The problem of cin.get() is that it skips over whitespace. A- True. B- False.

10- A single line comment in C++ language source code can begin with …. A- ;. B- /*. C- //. D- -.

11- Every C++ program must contain …. A- Start(). B- Main(). C- System(). D- Program().

12- Which header file is used to manipulate the string?. A- Container. B- iostream. C- iomanip. D- string.

13- Which operator is used for input stream?. A- <. B- <<. C- >. D- >>.

14- The value 132.54 can be represented using which data type?. A- Int. B- Bool. C- Double. D- Char.

15- Which operator can be used to compose two values?. A- ==. B- <>. C- ><. D- =.