# creating an array from a single user input

4 views (last 30 days)
Jakub on 8 Mar 2023
Answered: David Hill on 8 Mar 2023
how would i create and array from an input:
eg user inputs the number 12
Jakub on 8 Mar 2023
clc
%user input
userinput = input('input nth value for fibonacci calculation:');
%define two empty matrices one for fibonacci values and one for ratios
fibonacci = [];
ratio = [];
%define first two fibonacci values
fibonacci(1) = 0;
fibonacci(2) = 1;
fibonacci(3) = 1;
%define first golden ratio to be infinity
ratio(1) = 1/0;
%make a loop for the fibonacci equation starting from 3
for i = 3:(userinput+1)
fibonacci(i)=fibonacci(i-1)+fibonacci(i-2);
end
%make a loop for golden ratio values and equation
for i=2:userinput
ratio(i) = fibonacci(i)/fibonacci(i-1);
end
%create an array
n = 1:13;
%display final product
table1=table(n,ratio,fibonacci);
table2struct(table1)
disp(table(userinput,fibonacci,ratio))
so this is the fixed script, ive changed for i = 2:userinput so now whatever is inputted then that is what the ratio will go up to, will lump the for loops together. however what id like is for the n to be an array dependant on whatever has been input so if i input 25 then the ratio goes from 1-25 and so does fibonacci however n stays at 13.
However id like the n value to display 1,2,3,4,5,6,7,8...until user input has been reached.

David Hill on 8 Mar 2023
userinput = input('input nth value for fibonacci calculation:');
%define two empty matrices one for fibonacci values and one for ratios
fibonacci = [];
ratio = [];
%define first two fibonacci values
fibonacci(1) = 0;
fibonacci(2) = 1;
fibonacci(3) = 1;
%define first golden ratio to be infinity
ratio(1) = 1/0;
%make a loop for the fibonacci equation starting from 3
for i = 3:(userinput+1)
fibonacci(i)=fibonacci(i-1)+fibonacci(i-2);
end
%make a loop for golden ratio values and equation
for i=2:userinput
ratio(i) = fibonacci(i)/fibonacci(i-1);
end
%create an array
n = 1:userinput;%NEED n TO BE 1:userinput
%display final product
table1=table(n,ratio,fibonacci);
table2struct(table1)
disp(table(userinput,fibonacci,ratio))

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