How can I assign a value to a variable in the first iteration of a loop and for the rest of iterations the variable's value should be the outcome of the script?
15 次查看(过去 30 天)
显示 更早的评论
I have a simple script that will calculate the value of the variable 'y' depending on the values of the variables 'u' and 'v':
function y = fcn(v,u)
y=0;
if (u>v)|| (u<v)
y=y+(u-v);
else
y=y;
end
For the first iteration, the initial value of 'y' should be zero. For the rest of iterations, the initial value of 'y' should be the 'y' value of the previous iteration. How can I specify it in the script?
回答(1 个)
David Young
2015-7-23
Make y an argument to your function, and also remove unnecessary code:
function y = fcn(v, u, y)
y = y+(u-v);
end
Note that you didn't need the test, because if u is the same as v, u-v is zero.
Then in the calling code, initialise y to 0 before entry:
y = 0;
for k = 1:n
y = fcn(v, u, y);
end
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!