1/*
2 * Copyright (c) 2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16function main(): void {
17  let x: int | boolean | string  = 7;
18  assert(x == 7);
19  x--;
20  assert(x == 6);
21  x = x == 7;
22  assert(!x);
23  x = !x;
24  assert(x == true);
25  x = "x = " + x.toString();
26  assert(x == "x = true");
27}
28