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lines changed Original file line number Diff line number Diff line change 1+ using lib <io>;
2+ using lib <time>;
3+ using ns math;
4+ using ns utils::string;
5+
6+ // 常量定义
7+ const MAX_COUNT : int = 100;
8+ const PI : float = 3.14159;
9+ const APP_NAME : string = "CodeNothing Demo";
10+
11+ // 命名空间定义
12+ ns math {
13+ fn add(a : int, b : int) : int {
14+ return a + b;
15+ };
16+
17+ fn multiply(a : int, b : int) : int {
18+ return a * b;
19+ };
20+ };
21+
22+ // 嵌套命名空间
23+ ns utils {
24+ ns string {
25+ fn reverse(text : string) : string {
26+ // 调用库函数进行字符串处理
27+ return text; // 简化实现
28+ };
29+ };
30+ };
31+
32+ fn main() : int {
33+ using ns math;
34+ using ns utils::string;
35+ // 变量声明和赋值
36+ counter : int = 0;
37+ message : string = "Hello, CodeNothing!";
38+ is_running : bool = true;
39+
40+ // 使用库函数输出
41+ std::println(APP_NAME);
42+ std::println("开始演示核心语句...");
43+
44+ // 导入命名空间
45+
46+
47+ // 条件语句
48+ if (counter < MAX_COUNT && is_running) {
49+ std::println("条件满足,继续执行");
50+ } else {
51+ std::println("条件不满足");
52+ };
53+
54+ // for循环
55+ for (i : 1..5) {
56+ counter += i;
57+
58+ if (i == 3) {
59+ std::println("跳过i=3");
60+ continue;
61+ };
62+
63+ result : int = add(i, counter);
64+ std::println("i=" + i + ", result=" + result);
65+ };
66+
67+ // while循环
68+ temp : int = 0;
69+ while (temp < 3) {
70+ temp++;
71+ std::println("while循环: " + temp);
72+
73+ if (temp >= 2) {
74+ break;
75+ };
76+ };
77+
78+ // 自增自减操作
79+ num : int = 10;
80+ num++; // 后置自增
81+ ++num; // 前置自增
82+ num -= 5; // 复合赋值
83+
84+ // 命名空间函数调用
85+ sum : int = math::multiply(num, 2);
86+ std::println("最终结果: " + sum);
87+
88+ // 嵌套命名空间调用
89+
90+ reversed : string = reverse("test");
91+
92+ return 0;
93+ };
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