I see that you are getting this error “Index exceeds number of array elements(1)”. It is also mentioned that the potential cause of the error is the line “primenum = num(i);”.
From the flow of your program, it can be interpreted that you want to display all the Prime Numbers between 1 to 100.
Let’s have a look at the problematic code snippet:
for num = 1:100
i = isprime(num);
primenum = num(i);
disp(primenum);
end
In the code above “num” is a variable which is supposed to be 1x1 dimensional variable i.e. a scalar and indexing scalars is not a good idea. The error creeps in due to this reason only that we are trying to index a scalar variable.
Instead, you can modify the snippet as follows to be error free:
for num = 1:100
if isprime(num)
disp(num);
end
end
This way we make sure that we don’t index any scalar variable and avoid any potential errors.
I hope it will help!
