Development tools for Zephyr on STM32Workbench for Zephyr: VS Code extension to set up, build, flash and debug Zephyr applications on STM32.Devicetree manager: browse, edit and visualize Zephyr devicetree, STM32CubeMX-like for Zephyr.
Thank you again,
I have resolved this problem,
the reason is , I add -std=c99 in a wrong format,now I choose it in Properties->C/C++ Build->Dialect-> Language standard
It's working