Introduction to Programming Languages and Flowcharts

Jun 28, 2024

Programming Languages and Flowchart

Introduction

  • Speaker: Viplav Babbar
  • Purpose: To read and understand programming languages and flowcharts in the course

Course Content

  • Improve problem-solving skills
  • Work on thought processes
  • Understand questions and adopt approaches

Problem Solving Steps

  1. Understand the problem
  2. View the given values
  3. Derive an approach
  4. Write the program
  5. Create a flowchart and approach in memory
  6. Convert high-level code to machine language (0s and 1s)
  7. Convert code to executable format

Flowcharts

  • Definition: Diagrammatic representation of steps
  • Main Components:
    • Terminator: To represent start and end
    • Input/Output Box: For taking input and giving output
    • Process Box: For processing steps
    • Decision Making Diamond: For making decisions
    • Arrows: To represent flow

Approach Process

  1. Start: With start
  2. Take input: Take values into memory
  3. Process: Perform calculations
  4. Output: Print
  5. End: End state

Examples

Example 1: Addition of two numbers

  1. Start: Begin
  2. Take input: Read A and B
  3. Calculate: SUM = A + B
  4. Print: SUM
  5. End: End

Example 2: Calculate simple interest

  1. Start
  2. Take input: P, R, T
  3. Calculate: SI = (P * R * T) / 100
  4. Print: SI
  5. End

Example 3: Average of three numbers

  1. Start
  2. Take input: A, B, C
  3. Calculate: AVERAGE = (A + B + C) / 3
  4. Print: AVERAGE
  5. End

Generic Pseudocode

  • Problem solution in natural language without programming language
  • For example: Find the average of three numbers

Programming Languages

Key Points:

  1. Definition: Instruction set used to make a computer perform tasks
  2. Need: To give instructions to the computer
  3. Components:
    • Source Code: Human-readable code
    • Compiler: Translates source code into machine language (binary)
    • Executable File: Code understandable by the machine

What was learned:

  • Creating and understanding flowcharts
  • Writing pseudocode
  • Basic understanding of programming languages

Homework

  • Check prime numbers: Write a program to check prime numbers
  • Print even and odd numbers: Extract all even and odd numbers from 1 to N

Conclusion

  • In the next lecture, we will write the first program in C++: Hello World
  • Provide feedback in the feedback section on how you liked it