File path in Rust 1.55

In Rust 1.55, you can get the file path using the std::env::current_dir() function which returns a std::io::Result representing the current working directory. This can be combined with the std::path::PathBuf::join() method to construct a full path to a file. Here is an example:

use std::env;
use std::path::PathBuf;
fn main() {

    let current_dir = env::current_dir().expect("Failed to get current directory");

    let file_path = current_dir.join("example.txt");
println!("File path: {:?}", file_path);

}

In this example, we first call env::current_dir() to get the current working directory. We then use the join() method on the resulting PathBuf to append the file name "example.txt" to the end of the path. Finally, we print out the resulting file path using the println!() macro.

Note that current_dir() returns a Result type that needs to be properly handled with expect() or unwrap(). This is because it could return an error if the current directory does not exist or the program lacks permissions to access it.