scope of a variable
3 views (last 30 days)
Show older comments
hi, i am modifying a global variable inside a function.inside the function it works and stores the modified value.but when i am trying to access the same variable outside the function after it is modified,it is showing me the old value instead of the modified new value. can anybody help me?
0 Comments
Accepted Answer
Walter Roberson
on 2 Jan 2012
Have you declared the variable as being global inside the function? Global variables are only global in routines that use the 'global' declaration (or in nested routines that share variables with a routine that declares them as global.)
Also, note that if you have declared a variable as a parameter to a function, and then in the function you declare it to be global, then it will not be treated as global: using a variable as a parameter overrides a global declaration.
More Answers (0)
See Also
Categories
Find more on Simulink Functions in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!