BCA Unit 1 Quiz
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Questions and Answers

What is meant by linking process?

Linking is the process of combining multiple object files and libraries to create a single executable file. It resolves references between different modules and generates the final executable code. There are three types of linking: static linking, dynamic linking, and runtime linking.

What is C language? Explain any five features.

C is a high-level programming language that was developed at Bell Labs in the 1970s. It is widely used for system software development and is known for its efficiency and portability. Five features of C language are:

  1. Simple syntax
  2. Rich set of built-in functions
  3. Low-level access to memory
  4. Structured programming
  5. Portability

Explain the basic structure of a C program with an example.

A basic structure of a C program consists of a preprocessor directive, function declaration, main function, and statements. Here is an example: #include <stdio.h>

int main() { printf("Hello, World!"); return 0; }

What is a token? What are the different types of tokens available in C language?

<p>In C language, a token is the smallest unit of a program that is meaningful to the compiler. There are six types of tokens:</p> <ol> <li>Keywords</li> <li>Identifiers</li> <li>Constants</li> <li>Strings</li> <li>Operators</li> <li>Special symbols</li> </ol> Signup and view all the answers

Write the guidelines to use scanf() and printf() functions in C language.

<p>Guidelines to use scanf() and printf() functions:</p> <ol> <li>Include the &lt;stdio.h&gt; header file</li> <li>Declare variables to store input/output</li> <li>Use format specifiers to specify the type of input/output</li> <li>Use &amp; operator before variable name in scanf()</li> <li>Use escape sequences for formatting output</li> </ol> Signup and view all the answers

What is the purpose of a computer?

<p>The purpose of a computer is to transform data into meaningful information by processing input according to user instructions and providing desired output.</p> Signup and view all the answers

How can computers be categorized?

<p>Computers can be categorized based on size and data handling capabilities.</p> Signup and view all the answers

What is a minicomputer?

<p>A minicomputer is a medium-sized multiprocessing computer that supports 4 to 200 users at one time.</p> Signup and view all the answers

What is the similarity between a minicomputer and a microcontroller?

<p>A minicomputer is similar to a microcontroller.</p> Signup and view all the answers

Where are minicomputers commonly used?

<p>Minicomputers are commonly used in institutes or departments for various purposes.</p> Signup and view all the answers

Flashcards

Portability of C

C programs can be executed on different operating systems and platforms without needing significant changes. This makes C very flexible for various hardware environments.

Low-Level Access in C

It enables programmers to directly access and manipulate memory locations, allowing for greater control and efficiency.

Rich Library in C

A collection of pre-written functions and libraries that provide ready-to-use functionalities, simplifying development and avoiding reinventing the wheel.

Keywords in C

A specific set of predefined words that have a fixed meaning in C. Examples include: 'int', 'float', 'return', 'if'.

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Identifiers in C

Names created by programmers to label variables, functions, or other program elements. Rules include: starting with a letter or underscore, containing letters, numbers, and underscores.

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Constants in C

Values that don't change during program execution, such as numerical values (5, 2.3) or characters ( 'A' ).

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Main Function in C

The starting point of execution for a C program. It is defined with the keyword 'int' and the name 'main', followed by parentheses. Code within curly braces is executed.

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Linking Process in C

The process of combining multiple object files (compiled code) into a single executable program. It resolves references between different parts of the program.

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While vs. Do-While Loop

A while loop checks the condition before executing the loop body. It may not execute if the condition is false initially. A do-while loop executes the loop body at least once before checking the condition.

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Ternary Operator in C

A compact form of an if-else statement. They evaluate a condition and execute the specified expression based on its result.

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Study Notes

C Programming Fundamentals

  • C Language is a widely-used programming language known for its efficiency and versatility.

  • Key features of C include:

    • Portability: C programs can run on various platforms without modification.
    • Rich Library: Extensive built-in functions and operations available.
    • Low-level Access: Allows manipulation of hardware and memory addresses.
    • Structured Programming: Supports modular programming and function prototypes.
    • High Performance: Compiled code executes faster due to efficient memory management.

  • The linking process combines multiple object files into a single executable program, resolving symbol references among them.

  • The basic structure of a C program consists of:

    • Preprocessor Directives: Commands for the compiler like #include.
    • Main Function: The entry point of execution defined as int main().
    • Statements and Functions: Logic written in curly braces {}, for execution.

  • Tokens in C are the smallest elements of a program. Types include:

    • Keywords: Reserved words such as int, return, and if.
    • Identifiers: Names defined by the programmer.
    • Constants: Fixed values such as numbers.
    • Operators: Symbols for operations like +, -, *.
    • Separators: Characters like commas and semicolons.

  • Guidelines for using scanf() and printf():

    • Use format specifiers such as %d for integers, %f for floats, %s for strings.
    • Ensure correct variable type matching to avoid runtime errors.
    • Always check the return values of scanf() for successful input.

  • Basic data types in C include:

    • int: Integer type for whole numbers.
    • float: Used for floating-point numbers.
    • double: Provides double precision for floating-point numbers.
    • char: Represents individual characters.

  • An identifier is a name used to identify variables, functions, or arrays. Rules include:

    • Must begin with a letter or underscore.
    • Can contain letters, numbers, or underscores.
    • Cannot be a keyword and must not exceed a certain length.

  • Differences between while and do-while loops:

    • While Loop: Condition checked before execution; may not execute at all if condition is false.
    • Do-While Loop: Executes at least once; condition checked after execution.

  • Bitwise operators perform operations on bits directly, such as AND (&), OR (|), XOR (^), and NOT (~).

  • Ternary operator is a shorthand for an if-else statement, structured as condition ? expression1 : expression2.

Classification & Categorization of Computers

  • Computers transform data into meaningful information through user-provided instructions.

  • Categorization based on size includes:

    • Microcomputer: Small, single-user systems like personal computers.
    • Minicomputer: Medium-sized; supports multiple users (4 to 200) with multiprocessing capabilities.
    • Mainframe Computer: Large systems designed for bulk data processing and multi-user environments.
    • Supercomputer: Extremely powerful machines for complex calculations and simulations.

  • Minicomputers are utilized in environments like educational institutions or departmental functions.

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Description

This quiz is for the BCA students of Maharana Pratap College of Professional Studies. It covers Unit 1: Fundamentals of C programming and Control Structures. The quiz is designed to test the students' understanding of the basic knowledge of C Language. The quiz will be distributed on 25/09/2023.

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