update test case

src/res/test.2.txt

@@ -0,0 +1,21 @@
+void main(void)
+{
+	int i; int x[5];
+	
+	i = 0;
+	while( i < 5 )
+	{
+		x[i] = input();
+
+		i = i + 1;
+	}
+
+	i = 0;
+	while( i <= 4 )
+	{
+		if( x[i] != 0 )
+		{
+			output(x[i]);
+		}
+	}
+}