--- esU.py-	2016-09-09 23:20:00.000000000 +0900
+++ esU.py	2016-09-10 00:00:00.000000000 +0900
@@ -199,9 +199,9 @@ def tree_kwd(lst, kdic):
 			if top_is(r, 'kwd', 'else'):
 				e += [ r.pop(0)[2] ]
 			return [ e ] + r
-		if v == 'while' and len( lst[2:] ) > 0:
+		if v in [ 'while', 'for' ] and len( lst[2:] ) > 0:
 			if lst[1][:2] != [ 'br_s', '(' ]:
-				err_exit("not found '(' after 'while'")
+				err_exit("not found '(' after '{}'".format(v))
 			r = tree_kwd( lst[2:], kdic )
 			e = [ k, v, lst[1], r.pop(0) ]
 			return [ e ] + r
@@ -261,7 +261,7 @@ def es_split(s):
 		'br_e' : [ ')', ']', '}' ],
 		'op' : ops_flat,
 		'type' : [ 'int', 'char', 'void' ],
-		'kwd' : [ 'return', 'if', 'else', 'while' ],
+		'kwd' : [ 'return', 'if', 'else', 'while', 'for' ],
 		'spc' : [ ' ', '\t', '\n' ],
 		'etc' : [ ';', ',' ],
 	}
@@ -418,6 +418,13 @@ def do_kwd(v, expr, info):
 		while do_expr( expr[2], info ):
 			do_expr( expr[3], info )
 		return None
+	if v == 'for':
+		args = expr[2][2][::2]
+		do_expr( args[0], info )
+		while do_expr( args[1], info ):
+			do_expr( expr[3], info )
+			do_expr( args[2], info )
+		return None
 
 	warn_no_sup('do_kwd', 'v', v)