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Description
Flashcards by darkhumor21, updated more than 1 year ago
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Created by darkhumor21
about 8 years ago
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| Question | Answer |
| What code stops the console closing automatically once the program has been run. | Console.ReadKey(); |
| Name the 3 main groups of built-in types | Integral Types, Floating-point Types, Reference Types |
| This is the simplest possible type. It can only hold one of two values: true or false | bool |
| All integers of varying capacities belong to this type | Integral |
| All real numbers of varying range and precision belong to this type | Floating Point Types |
| The variables for these don't actually contain the value represented by these directly. They contain a reference to the memory address where the value is actually stored | Reference Types |
| What is an operator? | Operators are the most basic way that you can create interactions between objects/values |
| Name 3 important C# operators | unary, binary, ternary |
| What is a Unary operator? | Unary operators take only one operand |
| What is a Binary Operator? | Binary operators take two operands |
| What is an Iteration? | An Iteration is the act of repeating something (that ‘something’ being code statements in the programming context) |
| What is a Conditional action? | A conditional action is said to be one that is only performed if a certain condition is true |
| What is main use of a For Loop? | For loops allow us to specify the number of times to repeat a block of code |
| What is main use of a ForEach Loop? | Foreach loops (sometimes called “foreach, in” loops) are used to loop through items in an array or a collection |
| What is main use of a While Loop? | The while loop is used to repeat a block of code, while a certain condition remains true |
| What is a Decision Construct? | Decision constructs are used to control the flow of our programs. They allow us to run certain blocks of code once, only if a certain condition is true |
| Name the 2 key types of decision statements | if, switch |
| What is the If statement used for? | If statements allow you to choose which code gets executed |
| Name the 3 If statements | If, else, else if |
| What is the Switch statement used for? | A switch statement allows use to execute code based on a predefined set choices |
| What are the most important keywords in Switch statements? | Continue, Break |
| What is the purpose of the Continue keyword? | The ‘continue’ keyword is used to instantly move to the next iteration of a loop body |
| What is the purpose of the Break keyword? | The ‘break’ keyword, when used in the context of loops, can be read as “break out of this loop immediately, and do not loop any more.” |
| What is a Collection? | A Collection is a single container able to contain an arbitrary number of values |
| Name 3 of the 5 types of Collection | Array, List, Queue, Stack |
| Which is the most basic Collection? | Array |
| What is the difference between Lists and Arrays? | Lists are similar to arrays, except that they allow for dynamic sizing |
| What is a Queue? | The Queue collection is much the same as a List or Array. When you add items (called "Enqueueing"), they are added at the end, and when you remove them (called "Dequeueing"), you remove them from the front. This is a principle known as FIFO (or First In, First Out) |
| What is a Stack? | Stacks are like queues, but opposite. Stacks are LIFO (or Last In, First Out). To visualize this, imagine a tray for papers on your desk. When you add a paper to the tray, you add it on the top of the Stack. When you reach in for a paper, you pull the top one off, which was the last one added to the tray |
| What is a Function? | A Function is a sequence of program instructions that perform a specific task, packaged as a unit. This unit can then be used in programs wherever that particular task should be performed |
| What is a Method? | A method is simply a function attached to a class. In some languages, the distinction is important, because functions can be defined arbitrarily. In C# however, (named) functions must belong to a class, so the distinction is unimportant |
| What is a Type? | A classification identifying one of various types of data, such as real, integer or Boolean, that determines the possible values for that type; the operations that can be done on values of that type; the meaning of the data; and the way values of that type can be stored |
| What is an Argument? | An Argument is a special kind of variable, used in a subroutine [function] to refer to one of the pieces of data provided as input to the subroutine |
| What is Recursion? | Recursion is what it's called when a function calls itself. In other words, the function is defined in terms of itself |
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