Notes about the CXX file extension:

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To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened" (Windows 7) or "How do you want to open this file?" (Windows 10) if you double-click the file. There click on "More apps" and choose a suitable software to view such files on your PC or from email attachments.

Detailed information for file extension CXX:

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Other applications associated with file type CXX:

• Visual C++ (Source Code File) by Microsoft CorporationThe /Tc startup option specifies that the filename is a C source file, even if it doesnt have a .C extension. The /Tp option specifies that filename is a C++ source file, even if it doesnt have a .CPP or .CXX extension. .CXX is an old-style extension for C++ source files -- the Xs are supposed to represent plus signs turned 45 degrees.
• Zortech (C++ Program)

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To change file associations press Windows Key + X and then Apps and Features > Default apps > Choose default apps by file type. Invalid file associations could be the result of underlying issues within your Windows PC.

Technical data

To view technical data on file-extension CXX click this link to expand/hide the additional area.

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