Concept of a Program

1
Concept of a Program

• From the label on a shampoo bottle
• 1. Wet hair
• 2. Pour shampoo to hand
• 3. Apply shampoo to hair
• 4. Work into a lather
• 5. Rinse thoroughly
• 6. Repeat step 2 to 5 until clean
• For a general program
• starting point and terminating point
• a set of instructions
• execute sequentially (one step after another)

2
Everyday Examples on Programming

• Shampoo
• Set a VCR to record a TV program
• Open a can of tennis balls
• How to use a pair of chopsticks
• Languages used
• English-like language
• Sequences of buttons pushing
• Pictures or drawings
• Multimedia (video, voice, text, graphs)
• For scientific purpose, we have
• FORTRAN, pascal, C, LISP, and others