diff --git a/syntaxique/expr b/syntaxique/expr
new file mode 100755
index 0000000..d71c40c
Binary files /dev/null and b/syntaxique/expr differ
diff --git a/syntaxique/expr.y b/syntaxique/expr.y
index 4a63ea1..63feb74 100644
--- a/syntaxique/expr.y
+++ b/syntaxique/expr.y
@@ -18,6 +18,9 @@ void yyerror(char *s)
 %token <i> INT
 %type <i> E
 
+%left '+'
+%left '*'
+
 %%
 
 S	: E		{ printf("result=%d\n",$1); }