better error checking

src/main.rs

@@ -7,6 +7,10 @@ mod variable;
 
 fn main() {
     let mut vars = Variables::new();
-    let out = transpiler::Transpiler::default().transpile(r#"int x"#.to_string(), 0, &mut vars);
-    println!("{out}");
+    let mut trsp = transpiler::Transpiler::default();
+    let out = trsp.transpile("int 12 x".to_string(), 0, &mut vars);
+    for p in trsp.problems {
+        println!("{:?}: {}", p.problem_type, p.problem_msg)
+    }
+    println!("{out}\n\n\n{:?}", vars);
 }