find the path of a json file in rust

To find the path of a JSON file in Rust, you can use the std::path::PathBuf and std::env::current_dir() methods to obtain a PathBuf object representing the current working directory, then append the file name to it:

main.rs
use std::path::PathBuf;

let file_name = "example.json";
let mut path_buf = std::env::current_dir().unwrap();
path_buf.push(file_name);
let file_path = path_buf.as_path();
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Assuming that the example.json file is located in the same directory as the Rust source code, this code will create a PathBuf object representing the absolute path to the example.json file. You can then use file_path in your JSON file reading or writing code.