Factorial using a for loop

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Kayla
Kayla 2022-11-19
回答： Walter Roberson 2022-11-19
Hello, I looked at the other questions answered but they were not helpful for what I am trying to figure out. I have played around with different ways to write this but I cant figure it out. I was given no background information into how to go about this. I have seen people answer the question regarding a "while" loop and that makes complete sense, but the "for" loop is stumping me. I have been trying for three days now. I am also including a screen snip of the exact question being asked.
n=4
for i=1:n
x=n*(n-1);
end
disp('The value of factorial of 4 is')
disp(x)
  1 个评论
Kayla
Kayla 2022-11-19
I figured it out. Im leaving this up incase it helps anyone else in the future. I still havent figured out how to display the text along with the value of n and x but this code worked as you change the value of n.
n=4
x=1;
for i=1:n
x=x*i;
end

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回答（1 个）

Walter Roberson
Walter Roberson 2022-11-19
iteration 1, i=1, output is 1=1, =1*i
iteration 2, i=2, output is 1*2=2, =1*i
iteration 3, i=3, output is (1*2)*3=2*3=6, =2*i
iteration 4, i=4, output is (1*2*3)*4=6*4=24, =6*i
So at iteration i, the output is the previous output times i

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