Summation of numbers using prompts

Question

Mark Coughlin 2020-4-26

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/520922-summation-of-numbers-using-prompts

编辑： Sindar 2020-4-27

I want the program to prompt the user for the value n (the number of values to be added together). I then want the program to prompt the user n times for a number, for it to the add these numbers together and finally print the result. Any help would be appreciated, thank you! This is my code so far:

function sumnnums(n);
prompt='Enter the value of n: ';
n=input(prompt);
sum=0;
for i=1:n
    prompt='Enter a number: ';
    x(i)=input(prompt);
end
sum=sum+x;
formatSpec='The sum of the numbers is %6.4f\n';
fprintf(formatSpec,x(i));
end

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Answer 1

Sindar 2020-4-27

0
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https://ww2.mathworks.cn/matlabcentral/answers/520922-summation-of-numbers-using-prompts#answer_428587

编辑：Sindar 2020-4-27

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Two errors:

The function should not have n as an argument. Wait to ask the user
don't use "sum" as a variable name; it's a function
if you want to do "sum=sum+x" it needs to be in the loop and x needs to be a scalar. But, there's no reason to do it like that since you're already storing the results in an array. Just do this:

mysum = sum(x);