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# While Loops

Can someone please explain this problem to me? z = 2 sum = 0 while z<9: z += 1 sum=sum+z print (sum) Thanks

11 Answers

+ 3

You havent declare variable m and total, before the loop

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Oh sorry I typed in the wrong one

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z = 2
sum = 0
while z<9:
z += 1
sum=sum+z
print (sum)

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Whats wrong with that ?

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Nothing is, I just don’t know how you get the output

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Can you please explain it to me?

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Try adding this line
print(str(sum)+"+"+str(z))
Inside the loop :D

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The answer is 42. I just wanna know how to get to it because I have this worksheet with a bunch of while loops problems but I don’t know how to do them without checking with python. Could you please show me the steps to it?

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z = 2
sum = 0
while z<9:
print("z:",z,"\nsum:",sum,"\nz+=1: ", z+1, "\nsum+z: ",sum+(z+1),"\n----\n")
z += 1
sum=sum+z
print (sum)

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???? I don’t get it :/

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Try to run the code, each step will be printed