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The Structures are passed to functions using pass by value method.

The Arrays are passed as arguments in functions by referring to the name of the array.

Pass by reference or call by reference is the method by which the addresses of the actual arguments are passed to the called function.

(d) all the above

(a) Set precision

Arithmetical operators +, -, *, /, and % are used to perform an arithmetic (numeric) operation.

Example for assignment operators is a = 20;

1. 39 – Decimal

2. 032 – Octal 

3. OXCAFE – Hexadecimal

4. 04.14 – Decimal

Relational operators are used to test the relation between two values. A relational expression returns zero when the relation is false and a nonzero when it is true.

It is a set of symbols that a programming language identifies and is used in writing data and instructions in a programming language.

(a) Rick Mascitti

(b) Bjame Stroustrup

(c) C with Classes

The operators which perform an operation of the relation between two operands are called relational operators.

Mouse is the input device

C++ is an object-oriented programming language. It is also known as C with classes. It is a combination of C and Simula 67.

It was invented by Bjarne Stroustrup at AT &T Bell Lab in New Jersey, USA. in the early 1980’s.

Object-oriented programming and portability are important two characteristics of C++.

The operator which perform combine or negate the expressions that contain relational operators are called logical operators.

Plotter is used for printing building plan, flex board, etc.

(c) Impact printer

Correct answer is (b) two

(d) 30 to 1550 cps

Correct answer is (b) Plotter

• An input device feeds information to a computer system for processing.
• Input devices only allow for input of data to a computer.
• It is a peripheral device used to provide data and control signals to an information processing system such as computer.
• Example: keyboard, mouse.

Output unit:

• Output device reproduces or displays the results of that processing.
• Output devices only receive the output of data from another device.
• It is a unit which sends data from the computer to another device.
• Example: printer, monitor.

Memory enables the computer to store the program.

The memory unit is of two types:

1. Primary memory

2. Secondary memory

The primary memory is used to store data temporarily and secondary memory stores the data permanently

The control unit controls the flow of data between the CPU, memory I/O devices. It also controls the entire operations of a computer

1. Dangerous diseases, stench smell, mosquitoes breeding, etc.

2. I will collect rainwater for drinking and other purposes and will try to finish the daily chores before dusk.

3. I will move to a safer place, on a higher altitude.

Amy and Rose were knitting. Betty was looking at a magazine.

1. (e)

2. (c)

3. (h)

4. (g)

5. (i)

6. (d)

7. (j)

8. (f)

9. (b)

10. (a).

Amy Marshall and Betty Marshall were left alone in the home and due to cyclone, the water level was rising around their house. They were lucky enough to have their friends cum neighbour Rose field. Sara Field and Jim Hall in their house to fight against the disastrous moment. Amy’s mother had taken **** to dentist and on her way back she was supposed to meet Mrs. Brant for a recipe. Amy’s father was in Chicago on some business matters.

Red Cross helps the children by rescuing them from the flooded area and by saving their lives. ‘

Mr. Peters and Miss Marsh came to rescue the children.

(ii) the bridges between home and the town were under water.

Sara’s right leg just below the knee was hurt as she climbed down the ladder from the playhouse.

Jim went to get Sara. Sara was on the playhouse porch.

Jim asked the girls to be organized. He asked Betty to search and bring flashlight, candles, lamps and lanterns; Rose to fill the tubs and pails; Amy to check on food, blankets and coats. Jim also asked them to be ready with first-aid kit.

Flashlight, candles, lamps, lanterns, food, blankets, coats, books and jewels were some of the articles that the girls and Jim tried to move to the attic. By night, they were expecting the water to enter into the house. To be safe until the rescue arrived, they planned to stay in the attic.

Miss Marsh is the Red Cross Nurse. She understands that Sara has broken her right leg just below the knee. She splints it up with pillows and umbrella and lifts her safely into the boat. She also decides to take her to the emergency Red Cross hospital in Armoury.

Jean Henry Dunant

Tom Peter and Miss Marsh came in the rescue boat. (Tom Peter is member of the Red Cross Disaster Committee and Penny Marsh is the Red Cross nurse.)

Left behind in the house are Amy and Jim. Others were in the boat – Betty, Sara, Rose, along with Mr. Peter and Miss Marsh.

Answer is (b) vector(a.(b x c)) = 0

Answer is (a) (1,-3,2)

∫(sin x dx/(sin x + cos x)), x ∈ [0,π/2]

Let I = ∫(sin x/(sin x + cos x)) dx, x ∈ [0,π/2] ...(i)

I = ∫(sin((π/2) - x)/(sin((π/2) - x) + cos((π/2) - x)) dx, x ∈ [0,π/2]

I = ∫(cos x/cos x + sin x)) dx, x ∈ [0,π/2] ...(ii)

Adding eq. (i) and (ii),

2I = ∫((sin x + cos x)/(sin x + cos x)) dx, x ∈ [0,π/2]

2I = ∫1.dx, x ∈ [0,π/2]

2I = [x], x ∈ [0,π/2]

2I = (π/2) - 0

I = π/4

Answer is (c) 0

sin[π/3 - sin^-1(-1/2)] = sin[π/3 - (- π/6)]

= sin[π/3 + π/6] = sinπ/2 = 1

cot(tan^-1a + cot^-1a) = cot(π/2 - cot^-1a + cot^-1a) = cotπ/2 = 0

tan^-1(tan3π/4) = tan^-1(tan(π - π/4))

= tan^-1(-tanπ/4) = tan^-1(-1) = - π/4

cos^-1(cos(7π/6)) = cos^-1(cos(2π - 5π/6)) where, 5π/6 ∈ [0, π]

∴ cos^-1(cos(7π/6)) = cos^-1(cos(5π/6)) = 5π/6 (∵ cos(2π - θ) = cosθ)

\(\cos^{-1}\left(\cos\frac{13\pi}{6}\right)\)\(=\cos^{-1}\left(\cos\left(2\pi+\frac{\pi}{6}\right)\right)\)

[ Formula: cos (2π + x) = cos x , cos is positive in the first quadrant. ]

\(\cos^{-1}\left(\cos\frac{\pi}{6}\right)\) [Formula: cos ^-1(cos x) = x]

\(=\frac{\pi}{6}\)