/Od (Disable (Debug)) 

Turns off all optimizations in the program and speeds compilation.

/Od

Remarks

This option is the default. Because /Od suppresses code movement, it simplifies the debugging process. For information on the compile-for-debugging options, see /Z7, /Zi, /ZI (Debug Information Format), /Z7, /Zi, /ZI (Debug Information Format), and /Z7, /Zi, /ZI (Debug Information Format).

To set this compiler option in the Visual Studio development environment

  1. Open the project's Property Pages dialog box. For details, see How to: Open Project Property Pages.

  2. Click the C/C++ folder.

  3. Click the Optimization property page.

  4. Modify the Optimization property.

To set this compiler option programmatically

See Also

Reference

/O Options (Optimize Code)
Compiler Options
Setting Compiler Options