Computer Science 12 past paper 2024

The technique that reuses an existing class to build a new class is known as:

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Write down one application for each of the following types of operating systems: a. Time-sharing b. Real time c. Embedded

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Write down a C++ program that finds the area and perimeter of a square.

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The program in execution is called:

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Write down any three differences between process and thread.

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Why we use pointers? What is the difference between pointer variable declaration and initialization? Explain with example.

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In a flowchart, the **(parallelogram)** symbol is used to represent:

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How is protection system important in an operating system?

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Write a C++ program that contains two integer data members which are initialized to 100 when an object is created. It has a member function `avg()` that displays the average of dat…

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The step by step procedure to solve a problem is called:

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Write down any three responsibilities of a system analyst.

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Explain the difference between constant and variable with the help of programming examples.

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In file handling **stream** is a:

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Briefly describe any three types of deployment phase.

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Explain the use of following in C++ by using examples: - Continue statement - Exit function

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A type of member function that is preceded by tilde sign `~` is called:

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Briefly describe the five states of process with diagram.

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Write down the importance of using functions in C++. Also explain the following components of function: - Function definition - Function call

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What will be the output of the following expression? `int x = 20, y = 3; cout << x % y;`

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Write down any three differences between `if-else-if` and `switch` statements.

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Write a C++ program that inputs a positive integer and prints whether it is prime or composite.

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Which of the following loops is called **posttest loop**?

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What is understood by functional and non-functional requirements in requirement gathering phase of SDLC?

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Explain the concept of function signature. Also write down any four advantages of using functions in C++.

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Which of the following is correct syntax of string declaration?

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What will be the output of following code segment? `int i = 3;` `int j = i++;` `int k = ++i;` `cout << i << " " << j << " " << k;`

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int arr [5] = {9, 10, 12, 19, 98}; What will be stored at arr[4]?

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What will be the output of the following code segment?

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The parameters used in function call are called:

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What will be the output of the following code? `int m = 5, c = 0;` `while(c `{ m = m + 1; c = c + 1; }` `cout << m;`

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Which of the following functions is used to find if the control has reached the end of file or not?

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Write down the output of the following code segment:

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The ability to use an operator or function in multiple ways is called:

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int arr[3][4] = {{12, 0, 5, 10}, {7, 8, 19, 30}, {33, 1, 2, 22}}; Write down a statement that replaces 19 with 50.

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Write a program that inputs a string and displays the number of characters in it.

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Fill in the following table with Yes/No regarding Access Specifiers: 1. Access of members in same class (Public/Private) 2. Access of members in derived class (Public/Private) 3. A…

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Consider the following array declaration: `int arr[8];` a. How many elements are there in the array? b. Determine the highest index of the array. c. Determine the lowest index of t…

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What are strings? Briefly explain how to declare a string.

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Differentiate between local and static variables.

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Compare binary files with text files in light of file handling in C++.

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Briefly describe any three modes of file opening in C++.

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What is the use of reference operator (&) in pointers?

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How is an array different from a simple variable? Explain with an example.

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Write down the syntax of using the `eof()` function in file handling.

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Briefly explain the concept of data hiding in classes using an example.

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Write down any two advantages and one disadvantage of function overloading.

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Briefly explain the following terms related to array: a. Size of array b. Name of array c. Index

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Explain the role of Project manager in SDLC.

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What is the use of break statement in C++?

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