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37-uprobe-rust/args/src/main.rs

@@ -0,0 +1,23 @@
+use std::env;
+
+pub fn hello(i: i32, len: usize) -> i32 {
+    println!("Hello, world! {} in {}", i, len);
+    i + len as i32
+}
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    // Skip the first argument, which is the path to the binary, and iterate over the rest
+    for arg in args.iter().skip(1) {
+        match arg.parse::<i32>() {
+            Ok(i) => {
+                let ret = hello(i, args.len());
+                println!("return value: {}", ret);
+            }
+            Err(_) => {
+                eprintln!("Error: Argument '{}' is not a valid integer", arg);
+            }
+        }
+    }
+}