hii.... extract number from string

i have a string which of the form 100*exp(4*x)+156*exp(77*x)+...etc... from this how i get numbers 100,156 etc....?

[Jan]

Please post which output you want exactly for the shown input. What about the 4 and the 77?

Answer 1

[Azzi Abdelmalek]

s='100*exp(4*x)+156*exp(77*x)'
out=regexp(s,'\d+','match')

% or if you want to include non integer number

s='100.2*exp(4*x)+156.*exp(77*x)'
out=regexp(s,'[\d]+(\.\d)?','match')

[Azzi Abdelmalek]

Regarding to Jan's comment, maybe you are just looking for numbers followed by *exp:

s='100*exp(4*x)+156*exp(77*x)'
out=regexp(s,'[\d]+(\.\d)?(?=*exp)','match')