Programming Language A programming language is a translator - - PowerPoint PPT Presentation

Programming Language

• A programming language is a translator between human and

machine.

• Machine language is a set of codes each consists of a binary

string usually of length multiple of 8 (00000101,1000000,..)

• Since it is difficult to use binary codes we design programming

languages.

• Each program language has a compiler which creates a

machine codes.

But Why use a programming Language?

• We can built powerful programs/algorithms, to make the

computer do something we want to.

Programming Language

But Wait, what’s an Algorithm, and how it can make the computer do something?

Algorithm

Definition:

• A process or set of rules to be followed in calculations or
• ther problem-solving operations, especially by a
• computer. - Wikipedia
• A process with unambiguous steps that has a beginning

and an end, and does something useful. - Wikipedia

• A list of steps that you may follow in order to achieve a

goal - My definition

Algorithm - Daily Examples

• Faster Grocery

Steps 1. Make a list of grocery shopping 2. Sort your grocery list by location in the store 3. Go to your favorite market 4. Get the grocery cart 5. Trace the best/faster route, based on your sorted list 6. Shop and Have fun

Algorithm - Daily Examples

Algorithm

But how to apply for a computer ?

• Basically, it’s the same idea. You decide the steps, write it down, and

ask the computer to execute the algorithm.

• But how can I write an algorithm and ask the computer to execute it ?
• As said it before, computers understand only 0 and 1(Machine

language)

• We must use a translator, in order to “talk” to the computer

How to write this example, in English?

• 1. If need glasses:

2. Get some glasses

• 3. Then:
• collect ingredients and equipment
• Turn on your oven
• Prepare cake tins
• Prepare cream
• Put in the oven
• 4. while cake is not done(loop)
• keep it in the oven
• 5. Remove it from oven
• 6. Enjoy your Cake

Time to practice

How to Translate the Algorithm

• We are going to use C programing language