1_point.c的多个版本改写

1_point.c 的多个版本改写如下：

1. 1_point.c

2. 1_point.c

3. 1_point.c

4. 1_point.c

5. 1_point.c

6. 1_point.c

7. 1_point.c

8. 1_point.c

9. 1_point.c

10. 1_point.c