Lecture 3 Notes

# 2f 27 13014 28 13014 using what weve reviewed remark

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Unformatted text preview: ated before the assignment operation Can do things like increment a variable n༆  n༆  x=x+1 Expression on rhs is evaluated before the assignment operation Can do things like increment a variable x=x+1 n༆  n༆  1/30/14 10.567 A 3.0 17 Here, final x is prior x + one Assumes x has a prior value! 1/30/14 18 1/31/14 Predeﬁned Constants Assignment n༆  n༆  In general, any variable on the rhs must be initialized (i.e., have been given a value) •  Matlab provides a few pre- ini=alized variables pi IEEE ﬂoa=ng point approx. of pi Inf IEEE ﬂoa=ng point rep. for +inﬁnity Examples: •  You can OVERWRITE them, pi = 7;! y= 1+x % x must be previously set z= 4^2 – cos(y) !Inf = 1;! •  But this is a very bad prac=ce L༄ (except for i and j) 16 1/30/14 1/30/14 Input & Output n༆  Substitution sequences (conversion specifications) variable = input(‘prompt ’) n༆  fprintf(‘message to print ’) fixed point (or floati...
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## This document was uploaded on 03/11/2014 for the course CSCI 004 at Brown.

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