for_loop

%% For Loop
 clear all; close all; clc
v = input('Please enter a vector --> ');
sum = 0;
for i=1:1:length(v)
    sum = sum + (v(i))^2;
end

%% Creating v vector containg all integers less than or 
% equal to N that are prime number
N = input('Please enter a positive integer --> ');
primes = [];
for i=2:1:N
    if isprime(i)
        primes = [primes i];
    end   
end

%% For Loop- subplot

 clear all; close all; clc
a = rand(11,4)   % random matrix 11 rows 4 columns
a_re = 10*(0:10)'
a(:,1) = a_re
hold on
for i=2:1:4
    plot(a(:,1),a(:,i),'--bo')
end

%% Subplot loop  
x = 0:0.01:2*pi;
for i=1:1:3
    subplot(1,3,i)
    plot(x,sin(i*x));
end

%% for loop for creating values at s and y
x = linspace(0,5,1000);
y = x.*cos(x);
plot(x,y,'--b');
hold on
for i=100:100:1000
    plot(x(i),y(i),'ks','MarkerFaceColor','k')
end