Learnings in program development cycle

2009-06-30T03:52:00.000-07:00

In program development cycle, there are certain steps that you must follow in making a computer program which are the following:
a. Review of the programming specifications
b. Program design
c. program coding
d. program testing
e. program documentation

There are crtain steps followed also in program coding:
a. saving or compiling the program
b. entering the program
c. executing the program
d. review of the program

MEANING OF A FLOWCHART

A flowchart is a diagrammatic representation that illustrates the sequence of operations to be performed to get the solution of a problem. Flowcharts are generally drawn in the early stages of formulating computer solutions. Flowcharts facilitate communication between programmers and business people. These flowcharts play a vital role in the programming of a problem and are quite helpful in understanding the logic of complicated and lengthy problems. Once the flowchart is drawn, it becomes easy to write the program in any high level language. Often we see how flowcharts are helpful in explaining the program to others. Hence, it is correct to say that a flowchart is a must for the better documentation of a complex program.

I have learnt that in flowcharting you uses symbols in making a program design unlike in algorithm, we don't use symbols instead we make a well-defined procedure by words only, just like in making a recipe.

In flowcharting, we uses symbols in making a program design which are the following:

TERMINAL SYMBOL-used for the beggining and at the ending.

INITIALIZATION SYMBOL-used in introducing something that is not known to the computer meaning it is not recognized by the program.

PROCESS SYMBOL-used for manipulating data.

OUTPUT/INPUT SYMBOL-used for closing and opening of the program.

DESCISION SYMBOL-used for a conditional statements.

FLOW SYMBOL-used for directing the flow of the design.

flowcharting has 3 main purposes:
1. to serve as an efficient means of communication
2. to serve as an analytical tool
3.to seerve as a consice form of documentation

Draw a flowchart for computing factorial N (N!)

Where N! = 1 ´ 2 ´ 3 ´ …… N .

The required flowchart has been shown in fig 25.4

Answer:

ADVANTAGES OF USING FLOWCHARTS

The benefits of flowcharts are as follows:

Communication: Flowcharts are better way of communicating the logic of a system to all concerned.
Effective analysis: With the help of flowchart, problem can be analysed in more effective way.
Proper documentation: Program flowcharts serve as a good program documentation, which is needed for various purposes.
Efficient Coding: The flowcharts act as a guide or blueprint during the systems analysis and program development phase.
Proper Debugging: The flowchart helps in debugging process.
Efficient Program Maintenance: The maintenance of operating program becomes easy with the help of flowchart. It helps the programmer to put efforts more efficiently on that part

learnings in flowcharting

2009-06-29T17:07:00.000-07:00

In flowcharting, i have learnt that you uses symbols in making an instructions unlike
in algorithm, you uses words in making a well-defined instructions.
In flowcharting, there are certain symbols you use to make a design because like making a blueprint, flowcharting is the design in computer programming.
These are the following:
Terminal symbol-use for

myX.O.candy

Learnings in program development cycle

learnings in flowcharting