Flowchart CS Thinking Example 2

Follow the full solution, then compare it with the other examples linked below.

Example 2

medium
Describe the flowchart for a program that keeps asking the user to enter a password until they enter the correct one ('secret123'), then outputs 'Access granted'.

Solution

  1. 1
    Step 1: Start → Input: 'Enter password' (parallelogram) → Decision: password == 'secret123'? (diamond).
  2. 2
    Step 2: If No → loop back to the Input step. If Yes → Process/Output: 'Access granted' (parallelogram) → End.
  3. 3
    Step 3: The loop is shown by the 'No' arrow going back to an earlier step. This visually represents a WHILE loop — repeat until the condition is met.

Answer

Start → Input password → Decision (correct?) → No: loop back to input → Yes: Output 'Access granted' → End.
Flowcharts make loops visible — the backward arrow clearly shows repetition. This is why flowcharts are especially helpful for understanding loop logic before coding.

About Flowchart

A visual diagram that represents the steps of an algorithm using standard shapes: ovals for start and end, rectangles for processes or actions, diamonds for decisions (yes/no questions), parallelograms for input/output, and arrows to show the flow of execution between steps.

Learn more about Flowchart →

More Flowchart Examples

Example 1 easy

Name the four standard flowchart symbols and what each represents.

Example 3 medium

Describe the flowchart for a program that reads a number and outputs whether it is positive, negativ

Example 4 hard

Compare the strengths and weaknesses of flowcharts vs pseudocode for designing algorithms. When woul

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