Explain the key features of procedural programs

Pre-defined functions

A pre-defined function is sequence of instructions that are identified by name in a computer program but is built in high level programming language.

Local variables

Local variables are variables that exist only inside a function are called Local variables; they cannot be used outside the function.

Global variables

Global variables are variables that exist throughout the script are called Global variables. Their values can be changed anytime in the code and even by other functions.

Parameter passing

A parameter is a special kind of variable used in a subroutine to refer to one of the pieces of data provided as input to the subroutine.

Modularity

Modularity is the degree to which a systems components may be separated and recombined.

Programming libraries

Programming libraries is a collection of non-volatile resources used by computer programs, often to develop software. For example, configuration data, documentation, help data, pre-written code and subroutines. Programming libraries are important because without the programming library the program wouldn’t work. A programming library

Fixed loop

A fixed loop is a sequence of instructions that is continually repeated until a certain condition is reached. A fixed loop is used when the programmer knows at the start how many times the loop has to run.

Pre-check loop

Pre-check loop checks the condition before the carrying out the procedure.

Post-check loop

A post-check loop test runs the program to ensure it works and if it does, it will continue the loop.

Break-points

A breakpoint marks a point in your code where the execution will take a break.

Conditional commands

Conditional commands are a set of rules performed if a certain condition is met.

Case

Case statements are a substitute for long if statements that compare a variable to several "integral" values ("integral" values are simply values that can be expressed as an integer)

Conditional statements

A conditional statement is how the program can make a decision. These are also known as an IF statement. These decisions rely on testing at least one condition.

Use of Boolean operators

Boolean Operators are simple words like AND, OR, NOT or AND NOT. They used as conjunctions to combine or exclude keywords in a search, resulting in more focused and productive results. This should save time and effort by eliminating inappropriate hits that must be scanned before discarding.