# while计算1-100和
# num=0
# i = 1
# while i <= 100:
#     num = num + i
#     i += 1
# print(num)

# while循环嵌套，参考99乘法表

# for语句演示

# name = "i_love_python"
# for x in name:
#     print(x)
# i = 0
# name = "it_hema is a brand of it_cast"
#
# for x in name:
#     if x == "a":
#         i += 1
# print(i)

# range()语句使用
#
# for x in range(10):
#     print(f"{x}\t", end='')
# print()
# for x in range(20, 30):
#     print(f"{x}\t", end='')
# print()
# for x in range(10, 30, 3):
#     print(f"{x}\t", end='')

# for 嵌套

# for i in range(101):
#     print(f"表白地{i}天")
#     for j in range(11):
#         print(f"这是今天送的第{j}支花")

# 循环中断 continue/break
# for i in range(19):
#     print(f"这是第{i}次")
#     continue
#     print("abc")#此代码无法访问