Integrator and diffrentiator

clc;
close all;
syms t;
y=input('Enter the function : ');
%t=0:0.001*(1/T):1/T;
intop=int(y)
difop=diff(y)
figure(1)
ezplot(y,[0,0.1]);
xlabel('time in t');
ylabel('Amplitude ');
title('input signal');
zoom;
grid;
figure(2)
ezplot(intop,[0,0.1]);
xlabel('time in t');
ylabel('Amplitude ');
title('integrator o/p');
zoom;
grid;
figure(3)
ezplot(difop,[0,0.1]);
xlabel('time in t');
ylabel('Amplitude ');
title('diffrentiator  o/p');
zoom;
grid;