I am unable to display my output for my graph.

Why is the following not displaying my output? Please help.

t = [0:0.01:20]; 
Vo = 90; 
angle = [10 25 45 65 85]; 
g = 9.81; 
yo = 0; mm = 0; 
for theta = angle
    Xposition = Vo*cosd(theta)*t; 
    Yposition = ( -(1/2)*g*(t.^2) ) + Vo*sind(theta)*t + yo; 
    plot(t,Yposition,'DisplayName',int2str(theta)); 
    if max(Yposition(Yposition>=1)) > mm 
        mm = max(Yposition); 
    endif 
    hold on; 
endfor 
axis([0 inf 0 mm+20]) 
xlabel('Time(s)');  
ylabel('Projectile Height(m)') 
legend hold off;

Answer 1

[Sulaymon Eshkabilov]

Here is a corrected code:

t = 0:0.01:20; 
Vo = 90; 
angle = [10 25 45 65 85]; 
g = 9.81; yo = 0; mm = 0; 
for theta = angle 
    Xposition = Vo*cosd(theta)*t; 
    Yposition = ( -(1/2)*g*(t.^2) ) + Vo*sind(theta)*t + yo; 
    plot(t,Yposition,'DisplayName',int2str(theta)); 
    if max(Yposition(Yposition>=1)) > mm 
        mm = max(Yposition); 
    end
    
        axis([0 inf 0 mm+20]) 
        xlabel('Time(s)');  
        ylabel('Projectile Height(m)') 
        hold on
end
legend
hold off

Answer 2

[Walter Roberson]

Because MATLAB does not have endfor or endif commands.

t = [0:0.01:20];
Vo = 90;
angle = [10 25 45 65 85];
g = 9.81;
yo = 0;
mm = 0;
for theta = angle
    Xposition = Vo*cosd(theta)*t;
    Yposition = ( -(1/2)*g*(t.^2) ) + Vo*sind(theta)*t + yo;
    plot(t,Yposition,'DisplayName',int2str(theta));
    if max(Yposition(Yposition>=1)) > mm
        mm = max(Yposition);
    end
    hold on;
end
axis([0 inf 0 mm+20])
xlabel('Time(s)');
ylabel('Projectile Height(m)')
legend
hold off;

[per isakson]

endfor or endif are Octave keywords. Matlab uses end.