Question

List and explain the six primary constructs of programming languages.

Answer 1

1)Variable Assignment

One of the most essential prerequisites of a programming language is the capacity to assign values to variables. It generally represents the name of the storage location where value is stored. It's called variable because it can change over the course of the program. We can assign values to variables using expressions or direct values

2)Variable Types

It represents the types of value a variable can store. Variables are divided into different group based on their usage and the data they store. A variable can store either a logical, numeric or character value. The numeric value is further distinguished between an integer and a floating-point value

3)Conditional/Branching

Conditional statements give the power to make decisions on the go. Based on the evaluation of particular expression it decides further flow of a program. Every computer program has the ability to execute instructions in a sequential manner.

4)Branching/Looping

Loop construct is used for performing a similar task multiple times with minor modification every time. This helps programmers to write the logic in a very concise form.

5)Input/Output

This construct helps the computer to communicate with the outer world. There could be many ways you can talk to the computer for.ex.GUI, console, Files and so on.

6)Subroutines

To assist in reusing common segments of programs subroutines have been developed. These routines are "sub-programs" that do a particular task that can be reused many times at different point within the main program or even by other programs.