' break ' statement

The break statement lets you exit early from a for or while loop. In nested
loops, break exits from the innermost loop only.

Example 1:

for i = length(x)
% check for positive y
if y(x) > 0
% terminate loop execution
break
end
% follow your code
a = a + y(x);
...
end

Example 2:

x = sin(sqrt(variable));
while 1
n = input('Enter number of loops: ')
if n <= 0
% terminate loop execution
break
end
for i = 1 : n
% follow your code
x = x + 20;
...
end
end