Import statement and string representation fix.

hello.snow

@@ -0,0 +1,5 @@
+import stdio
+
+main as Function(argc as Int, argv as String*) -> Int:
+    printf("Hello, ☃!")
+    return 0

snowman/backends/c/__init__.py

@@ -72,7 +72,7 @@ def visit_Integer(self, node):
     visit_Float = visit_Integer
 
     def visit_String(self, node):
-        return '"%s"' % node.children['value']
+        return '"%s"' % repr(node.children['value'])[1:-1]
 
     def visit_Declaration(self, node):
         return fmt('{type} {name}',

snowman/nodes.py

@@ -180,7 +180,7 @@ class If(Statement):
     attributes = ['expr', 'block', ('else_block', None)]
 
 class ImportStatement(Statement):
-    attributes = ['name']
+    attributes = ['path']
 
 class Loop(Statement):
     abstract = True