how to view the C layer printf log on the mobile phone

I use `printf` to print logs in C layer, and compile the code into WASM library. then load the WASM file using HTML , run it on the phone, the question is how to view the logs printed by `printf in C layer` on the phone?

We can use the `vconsole` plugin to view console.log in JS, but how to view the C layer `printf` s log?