for loop to sum up the integer

Question

jarvan 2014-11-1

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回答： Hirusha Perera 2021-6-29

here is the question generate a random integer n in the range from 5 to 9 then loop n times to: -prompt the user for an integer between 1 to 10 -print the sum of the numbers entered so far

here what I got:

n = randi([5,9]);
totalsum = 0;
runsum = 0;
for i = n
    int = input('Enter an integer between 1 and 10 :');
    runsum = runsum + int;
    totalsum = runsum + totalsum;
end

I try to call up the loop, like, Enter an integer between 1 and 10 : 8 but it did not countinous to count up the sum

Can anyone have some suggestion for me?

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Answer 1

MA 2014-11-1

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在 MATLAB Online 中打开

try this:

n = randi([5,9]);
totalsum = 0;
runsum = 0;
for i=1:n
    int = input('Enter an integer between 1 and 10 :');
    runsum = runsum + int;
    totalsum = runsum + totalsum;
end
totalsum

good luck

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jarvan 2014-11-1

omg i just forget to input 'totalsum' at last. Thanks so much

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Answer 2

Harry 2014-11-1

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编辑：Harry 2014-11-1

在 MATLAB Online 中打开

You are executing your 'for' loop for only one value, n. Also, I think you probably want to remove your totalsum variable (it doesn't store the total sum... runsum will have the total sum at the end of the loop). Try this:

n = randi([5,9]);
runsum = 0;
for i = 1:n
    int = input('Enter an integer between 1 and 10 :');
    runsum = runsum + int;
    disp(['   Sum so far: ', num2str(runsum)]);
end

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jarvan 2014-11-1

thanks for your answer

Harry 2014-11-1

My answer is correct. The answer you accepted was submitted after mine and isn't correct (it doesn't output the correct number).

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Answer 3

Hirusha Perera 2021-6-29

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https://ww2.mathworks.cn/matlabcentral/answers/160868-for-loop-to-sum-up-the-integer#answer_736288

Prompt the user for two integersand write a programthat will calculate the summationand the product of all the integers between those inputs inclusively. what is the answer