diff --git a/parser.py b/parser.py
index 6e54549..67e966e 100644
--- a/parser.py
+++ b/parser.py
@@ -20,6 +20,9 @@ class Parser(sly.Parser):
         self.last_used_temp += 1
         return f't_{self.last_used_temp}'
 
+    def error(self, p):
+        self.had_errors = True
+
     @_('declarations stmt_block')
     def program(self, p):
         self.lines.append('HALT')
@@ -36,6 +39,20 @@ class Parser(sly.Parser):
         # Empty
         return None
 
+    # declaration errors
+    @_(
+     'idlist error ":" type ";"',
+     'error idlist ":" type ";"',
+     'idlist error idlist ":" type ";"',
+     'idlist error type ";"',
+     'idlist ":" error ";"',
+     'idlist ":" type error',
+     'error ":" type ";"'
+     )
+    def declaration(self, p):
+        self.had_errors = True
+        print_err(f"Invalid declaration in line {p.lineno}")
+
     @_('idlist ":" type ";"')
     def declaration(self, p):
         floats = p[2].is_float
@@ -68,6 +85,12 @@ class Parser(sly.Parser):
     def stmt(self, p):
         return p[0]
     
+    @_('error ";"')
+    def stmt(self, p):
+        self.had_errors = True
+        print_err(f'Invalid statement in line {p.lineno}')
+        return Statement([])
+
     @_('ID "=" expression ";"')
     def assignment_stmt(self, p):
         id = p[0]
@@ -88,6 +111,14 @@ class Parser(sly.Parser):
         self.lines.append(f'{command} {id} {exp.result}')
         return Statement([])
     
+
+
+    @_('INPUT error ";"')
+    def input_stmt(self, p):
+        self.had_errors = True
+        print_err(f'Invalid input statement in line {p.lineno}')
+        return Statement([])
+
     @_('INPUT "(" ID ")" ";"')
     def input_stmt(self, p):
         id = p[2]
@@ -100,6 +131,11 @@ class Parser(sly.Parser):
             self.lines.append(f'{command} {id}')
         return Statement([])
     
+    @_('OUTPUT error ";"')
+    def output_stmt(self, p):
+        self.had_errors = True
+        print_err(f'Invalid output statement in line {p.lineno}')
+
     @_('OUTPUT "(" ID ")" ";"')
     def output_stmt(self, p):
         id = p[2]
@@ -112,6 +148,12 @@ class Parser(sly.Parser):
             self.lines.append(f'{command} {id}')
         return Statement([])
     
+    @_('IF error stmt')
+    def if_stmt(self, p):
+        self.had_errors = True
+        print_err(f'Invalid if statement in line {p.lineno}')
+        return Statement([])
+
     @_('IF "(" boolexpr ")" if_jump stmt if_jump ELSE stmt')
     def if_stmt(self, p):
         exp = p[2]
@@ -129,6 +171,11 @@ class Parser(sly.Parser):
         self.lines.append('') 
         return line
 
+    @_('WHILE error stmt')
+    def while_stmt(self, p):
+        self.had_errors = True
+        print_err(f'Invalid while statement in line {p.lineno}')
+        return Statement([])
 
     @_('WHILE seen_WHILE "(" boolexpr ")" while_quit stmt')
     def while_stmt(self, p):
@@ -157,6 +204,12 @@ class Parser(sly.Parser):
         # helper to get the line number of when we start the check thing for a while expr
         return len(self.lines)
     
+    @_('SWITCH error "}"', 'SWITCH "(" expression ")" "{" caselist "}"')
+    def switch_stmt(self, p):
+        self.had_errors = True
+        print_err(f'Invalid switch statement in line {p.lineno}')
+        return Statement([])
+
     @_('SWITCH "(" expression ")" "{" caselist DEFAULT ":" stmtlist "}"')
     def switch_stmt(self, p):
         exp = p[2]
diff --git a/test.ou b/test.ou
index 2a362f3..65f621d 100644
--- a/test.ou
+++ b/test.ou
@@ -5,8 +5,9 @@ a: int;
         if(a >= 6 || a == 5) 
             break;
         else
-            a = a + 0;
+            a =] a + 0;
     }
+    input(a_;
     output(a);
     switch(a * 5) {
         case 1:
@@ -18,5 +19,18 @@ a: int;
             break;
     }
     output(a);
-    
+    switch(c) {
+		cae 2:
+			a = 6;
+    	
+    }
+    if (hello
+    	break;
+
+    if (a > 5) {
+    	aasdl;
+    }
+    else {
+    	break;
+    }
 }