1/* 2 * Copyright (c) 2022-2024 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 str: String = "hello\nworld\n"; 18 assert str.charAt(2) == c'l'; 19 assert str.length == 12; 20 assert str.charAt(str.length as int - 1) == c'\n'; 21 22 let a: String = "abc"; 23 let b: String = "ace"; 24 let c: String = "abc"; 25 assert !a.equals(b); 26 assert a.equals(c); 27 assert !b.equals(c); 28 29 let n2: int = 41; 30 let n3: long = 42; 31 let n4: float = 43.43; 32 let n5: double = 44.44; 33 let n6: double = random(); 34 let n7: double = random() + 42; 35 assert n6 >= 0.0 && n6 <= 1.0; 36 assert n7 >= 42.0 && n7 <= 43.0; 37 38 let s1: String = "This "; 39 let s2: String = "is "; 40 let s3: String = "another "; 41 let s4: String = "string"; 42 let s5: String = "This is another string"; 43 assert (s1 + s2 + s3 + s4).equals(s5); 44} 45