How to Stop FOR loop when "answer" is reached, and display answer?

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Alexis
Alexis 2022-12-2
评论： Star Strider 2022-12-2
Simple "throwing a ball" physics problem - someone throws a ball, I want to know what time the ball touches the ground.
I am trying to create a loop that "stops" when the height of the ball reaches 0.
Then I want to display what time the ball reaches height = 0.
Here is what I have sofar:
%When does ball Reach the Surface?
for t = 0:0.01:6.2
if height_earth = 0
disp('The Time when the ball lands is: %4.2f\n', time)
else
disp('The Ball doesnt Touch the Ground')
end
end
I get the display "The Ball doesnt Touch the Ground" 621 times, and have a feeling if "if height_earth = 0" were valid matlab syntax, a would get the entire time array.

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回答（1 个）

Star Strider
Star Strider 2022-12-2
See the documentation on the break function.
  2 个评论
Alexis
Alexis 2022-12-2
What about for the solving? How would I get it to display the time when height = 0?
Star Strider
Star Strider 2022-12-2
Put the break call after the disp call.
Also, the comparison requires a ‘double equal’ —
if height_earth == 0
.

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