《Python语言程序设计》第4章编程题答案（1）

wg19830119

number1=random.randint(0,9)

number2=random.randint(0,9)

number3=random.randint(0,9)

guess1,guess2,guess3=eval(input('输入三个一位整数：'))

number=number1+number2+number3

guess=guess1+guess2+guess3

print(number==guess ifnumber==guess else number==guess)

4.3:

a,b,c,d,e,f=eval(input('输入a,b,c,d,e,f'))

if a*d-b*c==0:

print('The equation has no solution')

else:

    x=(e*d-b*f)/(a*d-b*c)

    y=(a*f-e*c)/(a*d-b*c)

print('x is'+str(x)+'and'+str(y))

4.4:

import random

number1=random.randint(0,99)

number2=random.randint(0,99)

guess1,guess2=eval(input('输入两个小于100的整数：'))

number=number1+number2

guess=guess1+guess2

print(number==guess ifnumber==guess else number==guess)

4.5:

today_number=eval(input('今天是星期几：'))

day_list=['星期天','星期一','星期二','星期三','星期四','星期五','星期六']

today=day_list[today_number]

oneday_number=eval(input('输入今天之后到未来某天的天数：'))

oneday_number=(today_number+oneday_number)% 7

oneday=day_list[oneday_number]

print('today is '+str(today)+'and the futureday is '+str(oneday))

4.6:

weight,hight_feet,hight_inches=eval(input('输入体重，身高(英尺)，身高（英寸）'))

weight=0.45359237*weight

hight_feet=12*0.0254*hight_feet

hight_inches=0.0254*hight_inches

bmi=weight/(hight_feet+hight_inches)**2

print('BMI is '+str(bmi))

if bmi<18.5:

print('超轻')

elif18.5<=bmi<25.0:

print('标准')

elif25.0<=bmi<30.0:

print('超重')

elif30.0<=bmi:

print('痴肥')

4.7:

amount=eval(input('输入美元，末尾两位代表美分：'))

dollars=amount//100

remainingAmount=amount% 100

quarters=remainingAmount//25

remainingAmount=remainingAmount% 25

dimes=remainingAmount//10

remainingAmount=remainingAmount% 10

nickels=remainingAmount//5

remainingAmount=remainingAmount% 5

pennies=remainingAmount

if dollars==1:

美元='dollar'

else:

美元='dollars'

if quarters==1:

两角五分='quarter'

else:

两角五分='quarters'

if dimes==1:

一角='dime'

else:

一角='dimes'

if nickels==1:

五分='nickel'

else:

五分='nickels'

if pennies==1:

美分='penny'

else:

美分='pennies'

print(str(dollars)+美元+str(quarters)+两角五分+str(dimes)+一角+str(nickels)+五分+str(pennies)+美分)

4.8:

number1,number2,number3=eval(input('输入三个整数：'))

if number1>number2:

    number1,number2=number1,number2

if number1>number3:

        number1,number3=number1,number3

else:

        number1,number3=number3,number1

else:

    number1,number2=number2,number1

if number1>number3:

        number1,number3=number1,number3

else:

        number1,number3=number3,number1

print(number3,number2,number1)

4.9:

weight1,price1=eval(input('第1种包装重量和价钱'))

weight2,price2=eval(input('第2种包装重量和价钱'))

if price1 / weight1 > price2 / weight2:

print('package 2 has the better price')

elif price1 / weight1 < price2 / weight2:

print('package 1 has the better price')

else:

print('error')

4.10:

import random

number1=random.randint(-(1E+2),1E+2)

number2=random.randint(-(1E+2),1E+2)

print(number1,number2,number1*number2)

4.11:

year,month=eval(input('输入年和月:'))

if (year % 4 == 0and year % 100 != 0) or year % 400 == 0:

if month == 2:

       days = 29

elif month ==1or month == 3or month == 5or month == 7or month ==8or month ==10or month ==12:

       days=31

else:

       days=30

else:

if month ==1or month == 3or  month == 5or month == 7or month ==8or month ==10or month ==12:

       days=31

elif month == 2:

       days=28

else:

       days=30

print(days)

4.12:

number=eval(input('输入一个整数：'))

if (number % 5 == 0or number % 6 == 0) \

andnot (number % 5 == 0and number % 6 == 0):

print(number,'is divisible by 5 or 6,but not both')

elif number % 5 == 0and number % 6 == 0:

print(number,'is divisible by 5 and 6')

else:

print(number,'is not dicisible by 5 or 6')

zhangyu

前排支持下了哦~

test233

大人，此事必有蹊跷！

zhxxuan

求沙发

Lowell

这么强,支持楼主，佩服

oldpan

路过路过路过