C Sharp Programming

1. What is C#? a) A database management system b) A web development framework c) A programming language developed by Microsoft d) An operating system Click to View Answer and Explanation Answer: c) A programming language developed by Microsoft Explanation: C# is a modern, object-oriented programming language developed by Microsoft, widely used for a variety […]

1. Which namespace is commonly used for file handling in C#? a) System.IO b) System.File c) System.Data d) System.Text Click to View Answer and Explanation Answer: a) System.IO Explanation: The System.IO namespace contains types for handling files and data streams, making it the primary namespace used for file handling in C#. 2. How do you

1. What is an enum in C#? a) A method that returns several values b) A user-defined data type that consists of integral constants c) A special type of class for storing collections d) A data structure similar to an array Click to View Answer and Explanation Answer: b) A user-defined data type that consists

1. What is polymorphism in C#? a) A way to process different data types with a single interface b) The ability of different classes to provide unique implementations of the same method c) A feature that allows a class to have multiple constructors d) The ability to change a variable's type at runtime Click to

1. What is inheritance in C#? a) The process of creating new classes from existing ones b) Copying the same method into multiple classes c) Using the same variables in different classes d) Connecting classes through interfaces Click to View Answer and Explanation Answer: a) The process of creating new classes from existing ones Explanation:

1. What does the 'public' access modifier do in C#? a) Restricts access to the member within its declaring type b) Allows access to the member from any other code c) Allows access only within the same assembly d) Provides global access to a variable Click to View Answer and Explanation Answer: b) Allows access

1. What is encapsulation in C#? a) Breaking a program into multiple parts b) Hiding the internal state of an object and requiring all interaction to be performed through an object's methods c) The ability of a class to extend the functionality of another class d) A class that can be used to create objects

1. How do you define a method in C#? a) dataType methodName(parameters) { /* code */ } b) method dataType methodName(parameters) { /* code */ } c) dataType methodName = (parameters) { /* code */ } d) function dataType methodName(parameters) { /* code */ } Click to View Answer and Explanation Answer: a) dataType methodName(parameters)

1. What is the basic syntax of a for loop in C#? a) for (initialization; condition; iteration) { /* code */ } b) for (condition; initialization; iteration) { /* code */ } c) for (initialization; iteration; condition) { /* code */ } d) for where (initialization; condition; iteration) { /* code */ } Click to

1. What is the basic structure of a while loop in C#? a) while (condition) { /* code */ } b) while condition { /* code */ } c) while (condition) -> { /* code */ } d) while: (condition) { /* code */ } Click to View Answer and Explanation Answer: a) while (condition)

1. Which of the following is the correct syntax for a switch statement in C#? a) switch(variable) { case value: /* code */ } b) switch variable { case value: /* code */ } c) switch(variable) { when value: /* code */ } d) switch(variable) { if value: /* code */ } Click to View

1. Which of the following is the correct syntax for an if statement in C#? a) if (condition) { /* code */ } b) if condition { /* code */ } c) if (condition) then { /* code */ } d) if condition then { /* code */ } Click to View Answer and Explanation

1. How do you declare an array of integers in C#? a) int[] myArray; b) array<int> myArray; c) int myArray[]; d) int array[] myArray; Click to View Answer and Explanation Answer: a) int[] myArray; Explanation: In C#, arrays are declared with the type followed by square brackets, as in int[]. 2. What will be the

1. How do you concatenate strings in C#? a) Using the '+' operator b) Using the '&' operator c) Using the concat() method d) Using the append() method Click to View Answer and Explanation Answer: a) Using the '+' operator Explanation: In C#, strings are commonly concatenated using the '+' operator. 2. What method is

1. What is the output of the following expression in C#? 5 + 3 * 2 a) 16 b) 11 c) 8 d) 13 Click to View Answer and Explanation Answer: b) 11 Explanation: According to the order of operations in C#, multiplication is performed before addition. So, 3 * 2 is calculated first, making

1. Which of the following is a value type in C#? a) String b) Class c) Struct d) Delegate Click to View Answer and Explanation Answer: c) Struct Explanation: In C#, struct is a value type, whereas classes, strings, and delegates are reference types. 2. What is the size of a 'long' data type in

1. What is the default value of an int in C#? a) 0 b) 1 c) null d) undefined Click to View Answer and Explanation Answer: a) 0 Explanation: In C#, the default value of an int (integer) type is 0. 2. Which of the following is a valid declaration of a variable in C#?