Learn by Watching Code Run

Learn to Code by Watching It Run

Step through Python and C++ code line-by-line. See variables, stack frames, and heap objects change before your eyes.

No sign-up required Step-by-step execution visualizer
Uyren Tutor IDE stepping through a C++ class
ABOUT UYREN TUTOR IDE

See Your Code Come Alive

Watch every line execute, every variable update, and every function call unfold in real time

Stack and heap visualization mid-run

Step-Through Execution

Move forward and back through every line of code

Visual Memory Model

See stack frames and heap objects as they change

FEATURES

Everything You Need to Learn Code

Purpose-built tools that make understanding code intuitive and fast

Step-Through Execution

Pause, resume, and step through code one line at a time to understand logic flow.

Visual Memory Models

See stack frames, variables, and heap objects update in real time as code runs.

Multi-Language Support

Learn and visualize both Python and C++ with full syntax highlighting.

Collaborative Projects

Share projects with classmates and instructors and work together in real time.

Smart Code Assistance

AI-powered suggestions and explanations to help you learn as you write.

Run Without Setup

No installation, no configuration. Start learning instantly in your browser.

SEE IT IN ACTION

Try a Live Example

Pick an example and watch it run in the interactive visualizer — no sign-up required

Basic Variables & Output

python
# Basic variables and output in Python
name = "Alice"
age = 25
height = 5.9

greeting = "Hello, " + name + "!"

print(greeting)
print("Age:", age)
print("Height:", height)

See how variables store data and print output

Run Demo

Arrays & Loops

cpp
#include <iostream>
using namespace std;

int main() {
    int numbers[] = {10, 20, 30, 40, 50};
    int sum = 0;

    for (int i = 0; i < 5; i++) {
        sum += numbers[i];
    }

    cout << "Sum: " << sum << endl;

    return 0;
}

Watch arrays being populated and looped through

Run Demo

Classes & Methods

cpp
#include <iostream>
using namespace std;

class Counter {
    int count;

public:
    Counter() {
        count = 0;
    }

    void increment() {
        count++;
    }

    int getCount() {
        return count;
    }
};

int main() {
    Counter c;
    c.increment();
    c.increment();
    c.increment();

    cout << "Count: " << c.getCount() << endl;

    return 0;
}

See how an object stores state and its methods update it

Run Demo
No sign-up required to try the demo

Start Learning with Uyren Tutor IDE Today

Try the step-through debugger right now, or create your first project. See exactly how your code runs, one line at a time.