条件语句，while循环语句：完整的温度转换程序

a = int(input(‘摄氏度转换为华氏温度请按 1\n华氏温度转化为摄氏度请按 2\n‘))
if a == ‘1‘:
    c = float(input(‘请输入摄氏温度:‘))
    f = c*9/5+32
    print(‘摄氏{:.2f}的华氏为{:.2f}‘.format(c,f))
else:
    f = float(input(‘请输入华氏温度:‘))
    c = 5/9*(f-32)
    print(‘华氏{:.2f}的摄氏为{:.2f}‘.format(f,c))

while True:
    a = int(input(‘摄氏度转换为华氏温度请按 1\n华氏温度转化为摄氏度请按 2\n‘))
if a == ‘1‘:
    c = float(input(‘请输入摄氏温度:‘))
    f = c*9/5+32
    print(‘摄氏{:.2f}的华氏为{:.2f}‘.format(c,f))
elif a==2:
    f = float(input(‘请输入华氏温度:‘))
    c = 5/9*(f-32)
    print(‘华氏{:.2f}的摄氏为{:.2f}‘.format(f,c))
else:
    break