4. Accumulators

• The difference between a counter and an accumulator is that for counters, the added value is constant, and for accumulators, it is variable.

• Calculation of the sum of ten integer numbers

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1

n = 1

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suma = 0

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while n <= 10:

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    x = int (input ("Enter the last %d number: "% n))

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    suma = suma + x

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    n = n + 1

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​

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print ("suma: %d"% suma)

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​

Activity: 4.1 ActiveCode (ac_l15_4a_en)

• Average of 10 integer numbers

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1

n = 0

2

suma = 0

3

while n <10:

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    x = int (input ("Enter the last %d number: "% (n + 1)))

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    suma = suma + x

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    n = n + 1

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​

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print ("Average: %5.2f"% (suma / n))

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​

Activity: 4.2 ActiveCode (ac_l15_4b_en)

• Calculate the factorial of ten

1 i = 1 2 fact = 1 3 while i <= 10: 4     fact = fact * i 5     i = i + 1 6 print ("Fact(10) =% d"% fact) Edit this code line that just executed next line to execute << First < Prev Next > Last >> Step 1 of 34 Submit Python Tutor by Philip Guo Customize visualization (NEW!)

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Activity: CodeLens 4.3 (cl_l15_4_en)

• Calculate the factorial of an integer number n

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1

i = 1

2

fact = 1

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n = int (input ("Enter n: "))

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while i <= n:

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    fact = fact * i

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    i = i + 1

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​

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print ("Fact(%d) =% d"% (n, fact))

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​

Activity: 4.4 ActiveCode (ac_l15_4c_en)

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