DCA 1209 PRINCIPLES OF PROGRAMMING LANGUAGE JULY – SEPTEMBER 2025

Description

SESSION	JULY/SEPTEMBER 2025
PROGRAM	BACHELOR OF COMPUTER APPLICATIONS (BCA)
SEMESTER	II
COURSE CODE & NAME	DCA 1209 PRINCIPLES OF PROGRAMMING LANGUAGE

 

 

SET-I

 

Q1. What is a compiler? Describe the different types of compilers. 3 + 7           

Ans 1.

Compiler and Its Different Types

In programming languages, a compiler plays a crucial role in converting human-readable programs into a form that a computer can execute. Since computers understand only machine language, translators such as compilers are required to bridge the gap between high-level programming languages and hardware. The compiler not only translates code but also checks for errors and optimizes program execution.

Meaning of Compiler

A compiler is a system software that translates an entire program written in a high-level

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Q2. Elaborate on the various programming paradigms. 10         

Ans 2.

Various Programming Paradigms

A programming paradigm refers to a style or approach used in designing and writing programs. It provides a conceptual framework that influences how problems are analyzed and how solutions are structured. Over time, several programming paradigms have evolved to address different types of computational problems efficiently.

Procedural Programming Paradigm

The procedural paradigm focuses on procedures or functions that operate on data. Programs are

 

 

 

Q3. Write in brief on –

1. The Sets and its operations
2. The tail recursion. Differentiate between regular recursion and tail recursion. 5+5

Ans 3.

Sets, Set Operations, and Tail Recursion

In programming languages and theoretical computer science, mathematical concepts such as sets and recursion play an important role in problem solving and algorithm design. Sets provide a structured way of handling collections of distinct elements, while recursion offers a powerful technique to solve problems by breaking them into smaller sub-problems. Understanding these concepts helps programmers write efficient and logically sound programs.

(a) Sets and Their Operations

A set is a well-defined collection of unique elements. In programming, sets are used to represent

 

 

SET-II

 

Q4. Compare and contrast the use of if-else statements and switch-case statements in programming. Under what circumstances is one preferred over the other?        6+4     

Ans 4.

Comparison of if-else and switch-case Statements

Decision-making statements are essential in programming as they allow programs to execute different blocks of code based on conditions. Among these, if-else and switch-case statements are widely used. Both are used to control program flow, but they differ in structure, flexibility, readability, and performance. Choosing the correct conditional statement improves program clarity and efficiency.

if-else Statement

The if-else statement evaluates one or more conditions that result in a boolean value. If the

 

Q5. Write a short note on –

1. Scope and its types
2. Parameterized Exception 5+5

Ans 5.

(a). Scope and Its Types

Scope

In programming, scope refers to the region of a program where a variable, function, or identifier is accessible and can be used. It defines the visibility and lifetime of variables, ensuring that data is accessed in a controlled and predictable manner. Proper understanding of scope helps avoid naming conflicts, logical errors, and unintended data modification, thereby improving program reliability and readability.

Scope plays a crucial role in memory management and program structure. When a variable goes out of scope, it is no longer accessible, and in many cases, its memory can be reclaimed. This

 

Q6. What is concurrent programming, and how does it differ from parallel programming? 5+5       

Ans 6.

Concurrent Programming vs Parallel Programming

Concurrent Programming

Concurrent programming refers to a programming paradigm where multiple tasks are in progress at the same time. These tasks may not execute simultaneously but are structured so that their execution periods overlap. Concurrency focuses on managing multiple tasks that share resources, such as memory or input/output devices, and ensuring correct coordination among them.

Concurrency is commonly used in applications like operating systems, web servers, and user interfaces, where multiple activities must be handled without blocking one another. Techniques