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OnlineGDB

Online compiler and debugger for C/C++ and many other languages

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OnlineGDB is a browser-based IDE for writing, compiling, running and debugging code without a local toolchain. It combines a code editor with gcc/g++ as the compiler and gdb as the debugger, addressing the need to inspect crashes and bugs directly in an online environment.

The IDE supports a broad language list including C, C++, Java, Python, Kotlin, PHP, C#, Ruby, Pascal, Go, Rust, Swift and many others, with multiple C/C++ standards and Turbo C variants. Debugging provides call stack, local variables, registers, display expressions, breakpoints and watchpoints, plus step over/into/out controls. Projects can be saved, shared via live public links or expiring snapshot links, embedded, and downloaded; files can be created and renamed, code beautified, and extra compiler flags set. Command line arguments and standard input are supported, along with keyboard shortcuts. Debug mode is not supported for Python programs.

It is aimed at coders working in an online IDE who need debugging, and includes a Classroom section and learning resources. Accounts can be created or signed into through Google, Facebook or GitHub; creating permanent share links requires being logged in.

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