Lecture 3 Notes

# N incr 13014 27 13014 28 if construct if else

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Unformatted text preview: ng point) decimal—whole number exponential general—Matlab chooses a format character string %f %d %e %g %c %s r= input(‘Enter radius: ’) 20 fprintf(‘Increase ’) fprintf(‘is %f inches\n’, x) fprintf(‘Position (%d,%d)\n’, x,y) Examples: %f %15.2f 27 1/30/14 28 1/30/14 Using what we’ve reviewed •  Remark Matlab prints the values of an expression unless it ends with a semi- colon ; This is very handy for prototyping! 1/30/14 Code modiﬁca=on example 23 1/30/14 24 1/31/14 % Example 1_1: Surface area of a sphere % A: surface area of the sphere % r: radius of the sphere Modify the program to calculate the increase in surface area given an increase in the radius of a sphere. r= input('Enter the radius: '); A= 4*pi*r*r; fprintf('Surface area is %f!\n', A) Use miles for the radius, and inches for the radius increase. Note: 1 mile = 5280 feet 1/30/14 1/30/14 % Modified 1_2: Surface area increase % given an increase in the radius 26 % Modified 1_2: Surface area increase % given an increase in the radius r= input('Enter radius r in miles: '); delta= input('Enter delta r in inches: '); r= input('Enter radius r in miles: '); delta= input('Enter delta r in inches: '); newr= r + ((delta/12)/5280); A= 4*pi*r^2; newA= 4*pi*newr^2; incr= newA - A; fprintf('Increase in mile^2 is %f.\n', incr) 1/30/14 27 1/30/14 28 if construct If-else c...
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## This document was uploaded on 03/11/2014 for the course CSCI 004 at Brown.

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