Question

是的，所以我正在为火车到达某个目的地所需的燃料量编写代码，这些是代码的限制/必要性：

询问用户旅程的公里数仅在用户输入大于零的值时才继续将燃油量设定为公里数的100倍不允许燃料量小于1500单位显示所需的燃料量

这就是我到目前为止所说的，它表示存在语法错误，但我无法找到它们，因为我对编码很新。我不知道为什么它没有全部进入框中

Km = 0 

Fuel = 0

Extra = 0

print ("How long is the journey in Km?")

Km = input("Number of Km")

if Km == 0:
    Fuel = Kilometers*100

    if Fuel == 0 < 1500:
        Extra == 1500-Kilometers
        Fuel == Fuel + Extra
        print ("An extra" +Extra "units of fuel were added")
    else    
else
    print ("Please enter a valid number")

print ("You need" +Fuel "units of fuel to reach your destination")

Answer 1

Km = 0 

Fuel = 0

Extra = 0

print ("How long is the journey in Km?")

Km = input("Number of Km")

  if Km == 0:
        Fuel = Kilometers*100

        if Fuel == 0 < 1500:        ; == to compare
            Extra = 1500-Kilometers ; = to assign varable    
            Fuel = Fuel + Extra
            print ("An extra" +Extra+ "units of fuel were added") ; + was missing
        else    
    else
        print ("Please enter a valid number")

    print ("You need" +Fuel+ "units of fuel to reach your destination") ; + was missing

Answer 2

您的代码并不是很好，因为您没有使用编码指南，但这对初学者来说不是问题，但这里的代码是正确的。如果你不理解某些事情，你可以问我：

Km = 0 

Fuel = 0

Extra = 0

print ("How long is the journey in Km?")

Km = input("Number of Km")

if Km != 0:
    Fuel = Kilometers*100

    if Fuel < 1500 and Fuel > 0:
        Extra = 1500-Kilometers
        Fuel += Extra
        print ("An extra of " + Extra + " units of fuel were added")    
else
    print ("Please enter a valid number")

print ("You need" + Fuel + "units of fuel to reach your destination")

我不确定我是否真的理解你的代码所以请问我！

Answer 3

有多个语法错误，还有一些逻辑错误。我留下了一些评论来解释我发现和修复的一些错误。

Km = 0 
Fuel = 0
Extra = 0

print ("How long is the journey in Km?")

Km = int(input("Number of Km: "))   # Convert to integer
if Km >= 0:                         # You want to check if it is not negative
    Fuel = Km*100                   # You used a new variable called 'Kilometers' and not Km you had set above

    if Fuel > 1500:
        Extra = Fuel - 1500         # Bad math fixed?
        Fuel = Fuel + Extra
        print ("An extra " +str(Extra) +" units of fuel were added")        # Missing + and str cast on variable
    else:                           # Missing colon
        Fuel = 1500                 # Missing statement?
else:
    print ("Please enter a valid number")

print ("You need " +str(Fuel)+ " units of fuel to reach your destination")  # Missing + and str cast on variable

另一个Missing语法帖子

3 个答案: