Calculate average of numbers until sentinel Dry Run in PYTHON

Calculate average of numbers until sentinel is an interactive PYTHON dry run visualizer from the While programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Calculate average of numbers until sentinel Program Code

# Calculate average of numbers (stop at -1)
count = 0
total = 0
num = int(input("Enter a number (-1 to stop): "))

while num != -1:
    total += num
    count += 1
    num = int(input("Enter another number (-1 to stop): "))

if count > 0:
    average = total / count
    print(f"Average = {average:.2f}")
else:
    print("No numbers entered")

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