Lecture 1 Introduction to Programming, Flowcharts and Flow of Control Sequential Execution PDF

Structure Programming By Dr. Safa Elaskary Dr. Manar Elshazly Fall 2024-2025 1 2 Lecture 1 : Introduction to Programming, Flowcharts, and Flow of Control 1. Overview of Programming Concepts 2. Introduction to Python: 3. Fl...

Structure Programming By Dr. Safa Elaskary Dr. Manar Elshazly Fall 2024-2025 1 2 Lecture 1 : Introduction to Programming, Flowcharts, and Flow of Control 1. Overview of Programming Concepts 2. Introduction to Python: 3. Flowchart Symbols: 4. Writing Sequential Python Code: 3 1. Overview of Programming 4 5 6 2. Introduction to Python 7 8 If you agree with me that the relative popularity of a programming language matters, then Python is clearly a good choice 9 10  Where to use python? ◦ System management (i.e., scripting) ◦ Graphic User Interface (GUI) ◦ Internet programming ◦ Database (DB) programming ◦ Text data processing ◦ Distributed processing ◦ Numerical operations ◦ Graphics ◦ And so on… 11 12 13 14 Arithematic operation 15 Comparator operators 16  3. Flow Chart ◦ Flowcharts graphically represent the flow of a program. ◦ There are four basic shapes used in a flow chart. Each shape has a specific use: ◦ oval: start / end ◦ parallelogram: input / output ◦ rectangle: calculations ◦ diamond: selection structures 17 ◦ Arrows connect the basic shapes in a flowchart. The shapes and arrows of a flowchart describe the flow of a program from start to end. Flowcharts typically flow from the top to the bottom or flow from the left to the right. Below is the description of a simple program: 18 Ex1 19 Ex2 20 4. Writing Sequential Python Code: 21 22 ck Quiz A. 30 B. 1020 C. Error D. I can’t know the answer 23  Quick Quiz Order precedence 24  Quick Quiz Put True or false: 1. X = 5 assigns that 5 to the variable X 2. X==5 checks if x has value 5 25 26