Pseudocode Presented by: Vivek First Year - First Semester
What is Pseudocode? • Pseudocode is a method of planning algorithms using plain English. • It’s not actual code, but it represents the logic of a program. • No strict syntax rules like programming languages. • Helps beginners and professionals design programs clearly.
Why Use Pseudocode? • Makes problem-solving easier to understand. • Helps organize thoughts before writing real code. • Bridges the gap between problem and programming. • Useful for explaining logic to others.
Features of Pseudocode • Written in plain, simple English. • Focuses on logic, not syntax. • Easy to modify or debug. • Portable: Can be translated to any language like C, Python, etc.
Basic Pseudocode Keywords • START / END - Begin and end of program. • READ / INPUT - Take user input. • DISPLAY / PRINT - Output information. • IF / ELSE - Decision making. • FOR / WHILE - Loops. • SET - Assign values.
Example 1: Add Two Numbers START READ number1 READ number2 SET sum = number1 + number2 DISPLAY sum END
Example 2: Print Numbers 1 to 5 START FOR i = 1 TO 5 DISPLAY i END FOR END
Example 3: Even or Odd START READ number IF number MOD 2 == 0 THEN DISPLAY "Even" ELSE DISPLAY "Odd" END IF END
Tips to Write Good Pseudocode • Use clear and simple language. • Write one operation per line. • Keep it structured and organized. • Use indentation to show hierarchy. • Don't worry about exact syntax.
Final Thoughts • Pseudocode is an essential skill for all programmers. • It makes coding more organized and less error-prone. • Start every program by writing pseudocode first. • Practice with daily life examples to get better!
Uses of Pseudocode • Planning complex algorithms before coding. • Teaching programming concepts to beginners. • Writing flow of logic without worrying about syntax. • Communicating ideas with non-programmers. • Designing solutions during software development.
Advantages of Pseudocode • Easy to understand and write. • Helps in problem-solving and logical thinking. • Reduces complexity before actual coding. • Can be used by people without programming background. • Saves time during debugging and design.
Disadvantages of Pseudocode • Not executable by a computer. • Different people may write it differently for the same problem. • Can sometimes be too simple for complex problems. • Requires conversion to real code, adding extra steps. • No fixed syntax – can lead to confusion.
Pseudocode vs Programming Language • Pseudocode is for humans; Programming language is for computers. • Pseudocode uses plain English; Programming uses specific syntax. • Pseudocode cannot be compiled; Code can be compiled and run. • Pseudocode is used in planning; Code is used in execution.
Flowchart: Add Two Numbers Start Read number1 and number2 Add number1 and number2 → sum Display sum End
Flowchart: Check Even or Odd Start Read number Is number MOD 2 == 0? If Yes → Display 'Even' If No → Display 'Odd' End
Advantages vs Disadvantages Advantages: • Easy to understand • Quick to write • Encourages logical thinking • Reduces coding errors Disadvantages: • Not executable • No standard format • Needs to be converted to real code