C++ Starter Technical Support

We can help with code editing, local compilation, standard input, program output, course exercises, and local project storage.

Support email: ministep@dozen.network

Company: Dozen Network Technology Co., Ltd.

What to include when contacting us

The approximate time of the issue and the complete steps to reproduce it;
Your C++ Starter version and build number;
Your device model and iOS, iPadOS, or macOS version;
Compiler output, screenshots, and the smallest code sample that reproduces the issue; and
Whether the program requires standard input and whether the issue can be reproduced offline.

Code may contain personal information, credentials, or other sensitive data. Remove unnecessary sensitive information and send only the minimum code needed to reproduce the issue.

Frequently asked questions

Do I need an internet connection or an account?

No account is required. Core features such as editing, compiling, running code, and the C++ Basics course work locally. A network connection is required for purchases, restoring purchases, and checking the App Store for updates.

Why does the first run take longer?

On iPhone and iPad, C++ Starter loads its bundled toolchain and compiles your source code on the device. The first cold compilation can take longer than later runs, depending on the device and code complexity.

Why does my program show “Waiting for Input”?

The program is reading standard input. Enter a line in the console and send it, or send EOF when no more input is needed. You can also prepare reusable input in the preset standard input area before running the program.

What should I do if a program keeps running?

Tap Stop. C++ Starter also terminates programs that exceed the execution time or output limits, preventing an infinite loop from using device resources indefinitely.

Why is my project missing?

Open Deleted Projects in Settings and try to restore it. Projects are stored only on the current device and may not be recoverable after uninstalling the app, clearing its data, changing devices, or a device failure.

How do I restore IDE Pro?

Open the IDE Pro page in Settings and select Restore Purchases while using the same Apple Account that made the purchase.