循环for、while

for格式:
https://img2024.cnblogs.com/blog/3659684/202507/3659684-20250728144146476-961151413.png

https://img2024.cnblogs.com/blog/3659684/202507/3659684-20250728144219254-1933320248.png

while循环格式：https://img2024.cnblogs.com/blog/3659684/202507/3659684-20250728144243083-664667407.png

while和for的对比：
https://img2024.cnblogs.com/blog/3659684/202507/3659684-20250728144305433-1661481218.png

https://img2024.cnblogs.com/blog/3659684/202507/3659684-20250728144308095-341538477.png