how to stop logical operators?

I need to create a program that calculates square root of 2 using loop. starting with t=0.5. I need to stop cycle (and print iteration number i) when the t(i) is same for approximation : if abs((t(i)-t(i+1)))<10^-6. Can anyone help me? please please please :)

 t(1)=0.5

for i=1:10

    t(i+1)=1/2*(t(i)+2/t(i));
    if abs((t(i)-t(i+1)))<10^-6
       [ i, t(i)]
    else 
    end
end

Answer 1

[Walter Roberson]

if condition
  break
end

[kakato]

thanks a lot, but I need without break. how to use while in this case?

[Aviram Gelblum]

t(1)=0.5;
t(2)=1/2*(t(1)+2/t(1));
i=1;
while abs((t(i)-t(i+1)))>=10^-6
t(i+2)=1/2*(t(i+1)+2/t(i+1));
i=i+1;
end
t=t(end-1);

[kakato]

Thanks a lot :)

Answer 2

[Laurent]

Instead of a for-loop, you can use a while loop. Something like this:

while abs((t(i)-t(i-1)))>10^-6
   your calculations
   i=i+1;
end

[kakato]

thank u :)