C Practice · ⁨C 练习⁩

Every lesson runs in your browser — write real code, press Run, and the tasks check themselves. Free, no account needed, with translated notes paired with English. · ⁨每节课均在浏览器中运行——编写真实代码，点击运行，任务自动检查。免费，无需账户，配有与英文对照的翻译笔记。⁩

Start the course · ⁨开始课程⁩

Lessons in this course · ⁨本课程中的课程⁩

No lessons match. Clear the search or choose another filter. · ⁨没有匹配的课时。请清空搜索或选择其他筛选条件。⁩

1. 01 Print a word · ⁨打印一个单词⁩ 1 required task · ⁨1 个必做任务⁩ · ★
2. 02 Print another word · ⁨再打印一个单词⁩ 1 required task · ⁨1 个必做任务⁩ · ★
3. 03 Print a sentence · ⁨打印一句话⁩ 1 required task · ⁨1 个必做任务⁩ · ★
4. 04 Print with a ! · ⁨用感叹号打印⁩ 1 required task · ⁨1 个必做任务⁩ · ★
5. 05 Print two lines · ⁨打印两行⁩ 1 required task · ⁨1 个必做任务⁩ · ★
6. 06 Print three lines · ⁨打印三行⁩ 1 required task · ⁨1 个必做任务⁩ · ★
7. 07 Print a number · ⁨打印一个数字⁩ 1 required task · ⁨1 个必做任务⁩ · ★
8. 08 Add two numbers · ⁨两数相加⁩ 1 required task · ⁨1 个必做任务⁩ · ★
9. 09 Subtract · ⁨减法⁩ 1 required task · ⁨1 个必做任务⁩ · ★
10. 10 Multiply · ⁨乘法⁩ 1 required task · ⁨1 个必做任务⁩ · ★
11. 11 Remainder · ⁨求余数⁩ 1 required task · ⁨1 个必做任务⁩ · ★
12. 12 A number variable · ⁨数字变量⁩ 1 required task · ⁨1 个必做任务⁩ · ★
13. 13 Add two variables · ⁨变量相加⁩ 1 required task · ⁨1 个必做任务⁩ · ★
14. 14 Multiply two variables · ⁨变量相乘⁩ 1 required task · ⁨1 个必做任务⁩ · ★
15. 15 Your first function · ⁨你的第一个函数⁩ 1 required task · ⁨1 个必做任务⁩ · ★
16. 16 Is it positive? · ⁨是正数吗?⁩ 1 required task · ⁨1 个必做任务⁩ · ★
17. 17 Cube a number · ⁨求立方⁩ 1 required task · ⁨1 个必做任务⁩ · ★
18. 18 The smaller one · ⁨较小的那个⁩ 1 required task · ⁨1 个必做任务⁩ · ★
19. 19 Square a number · ⁨求平方⁩ 1 required task · ⁨1 个必做任务⁩ · ★
20. 20 Sign of a number · ⁨数的符号⁩ 1 required task · ⁨1 个必做任务⁩ · ★
21. 21 Largest of three · ⁨三个数的最大值⁩ 1 required task · ⁨1 个必做任务⁩ · ★★
22. 22 Factorial · ⁨阶乘⁩ 1 required task · ⁨1 个必做任务⁩ · ★★
23. 23 Greatest common divisor · ⁨最大公约数⁩ 1 required task · ⁨1 个必做任务⁩ · ★★
24. 24 Count the 1-bits · ⁨数 1 的位⁩ 1 required task · ⁨1 个必做任务⁩ · ★★
25. 25 Sum an array · ⁨数组求和⁩ 1 required task · ⁨1 个必做任务⁩ · ★★★
26. 26 Swap two values · ⁨交换两个值⁩ 1 required task · ⁨1 个必做任务⁩ · ★★★
27. 27 String length · ⁨字符串长度⁩ 1 required task · ⁨1 个必做任务⁩ · ★★★
28. 28 Count a character · ⁨统计某个字符⁩ 1 required task · ⁨1 个必做任务⁩ · ★★★
29. 29 Reverse in place · ⁨原地反转⁩ 1 required task · ⁨1 个必做任务⁩ · ★★★★
30. 30 Palindrome · ⁨回文⁩ 1 required task · ⁨1 个必做任务⁩ · ★★★★
31. 31 Bubble sort · ⁨冒泡排序⁩ 1 required task · ⁨1 个必做任务⁩ · ★★★★
32. 32 Points with a struct · ⁨用结构体表示点⁩ 1 required task · ⁨1 个必做任务⁩ · ★★★★
33. 33 Binary search · ⁨二分查找⁩ 1 required task · ⁨1 个必做任务⁩ · ★★★★★
34. 34 Parse an integer · ⁨解析整数⁩ 1 required task · ⁨1 个必做任务⁩ · ★★★★★

Language reference · ⁨语言参考⁩

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