may 2018 question paper Flashcards
What is an algorithm?
A step-by-step procedure for solving a problem.
What is the role of a compiler in C#?
It translates C# code into Intermediate Language (IL) that the CLR executes.
What is a comment in C# and why is it used?
A non-executable line in the code, used for documentation (// Single-line, /* Multi-line */).
What is the purpose of the Main() method in a C# program?
It serves as the entry point for execution.
What is the difference between int and double in C#?
int stores whole numbers, while double stores decimal numbers.
What is a variable in C#?
A named memory location used to store data.
What is an if statement used for in C#?
It allows conditional execution of code blocks.
What is the difference between while and do-while loops?
while checks the condition first; do-while executes once before checking.
What is an array in C#?
A collection of elements of the same data type, stored in contiguous memory locations.
How do you declare an integer array in C#?
int[] numbers = new int[5];
What is the purpose of the foreach loop?
It iterates over elements in a collection without using an index.
What is a method in C#?
A reusable block of code that performs a specific task.
What is method overloading?
Defining multiple methods with the same name but different parameters.
What is the difference between public and private access modifiers?
public allows access from anywhere, while private restricts access to within the class.
What is a class in C#?
A blueprint for creating objects, containing fields, properties, and methods.
What is inheritance in C#?
It allows a derived class to inherit members from a base class.
What is polymorphism?
The ability of different classes to be treated as instances of the same base class.
What is encapsulation?
Hiding the internal implementation details of an object.
What is exception handling in C#?
Using try-catch blocks to handle runtime errors gracefully.
How do you read a text file in C#?
string text = File.ReadAllText(“file.txt”);
