Python基础——PyCharm版本——第四章、基础语法-分支语句(条件判断if语句)

age = 20
if age >= 18:
    print('your age is', age)
    print('成年人')

age = 7
if age >= 18:
    print('your age is', age)
    print('成年人')
else:
    print('your age is', age)
    print('年轻人')

age = 3
if age >= 18:
    print('成年人')
elif age >= 6:
    print('年轻人')
else:
    print('孩子')

age = 105
if age >= 18:
    if age <40:
        print("壮年")
    elif age<60:
        print("中年")
    else:
        print("老年")
elif age >= 6:
    print('年轻人')
else:
    print('孩子')