tweak pretty output

src/ast.rs

@@ -98,7 +98,7 @@ impl fmt::Display for Ast {
                 write!(f, "{{{}}}", body.join(" "))
             }
             Ast::App(func, x) => write!(f, "({func} {x})"),
-            Ast::BinOp(lhs, op, rhs) => write!(f, "({op} {lhs} {rhs})"),
+            Ast::BinOp(lhs, op, rhs) => write!(f, "({lhs} {op} {rhs})"),
             Ast::Num(n) => write!(f, "{n}"),
             Ast::Block(body) => {
                 let body: Vec<_> = body.iter().map(|stmt| format!("{stmt}")).collect();

src/main.rs

@@ -12,6 +12,6 @@ fn main() {
     let src = &env::args().nth(1).expect("give me an argument now");
     let res = parse(src);
     for stmt in res {
-        println!("{stmt}");
+        println!("{stmt};");
     }
 }