# 定义身高变量
height = 1.75
# 定义体重变量
weight = 75
# 定义用户名变量
username ='小明'
# 求体质指数
bmi = weight/height**2
# 打印体质指数
print(f'username您好,您的体质指数为{round(bmi,1)}')
# 验证
if bmi <=18.5 :
print(f'username您好,您的体质偏瘦')
elif bmi <= 24.9:
print(f'username您好,您的体质正常')
elif bmi <=29.9:
print(f'username您好,您的体质超重')
else:
print(f'username您好,您的体质肥胖')
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