Genetic algorithm objective function

I want to create an objective function that will be the sum of a series of 100 variables that will have a range of values between 0 and 1.

Instead writing down a sum like this:

x(1)+x(2)+ ... + x(100)
    

I want to find an automated way for this sum of x()s to be created.

[嘉琦 常]

function [lb,ub,dim,fobj] = Get_Functions_details(F)

switch F

case 'F1'

fobj = @F1;

lb=0;

ub=1;

dim=100;

end

end

function o = F1(x)

o=sum(x.^2);

end