exp2_14.m

本书基于MATLAB 5.2版

clear
clc
close
t=-pi:0.1:pi;
trigname=input('Input trig functions name:')
switch trigname
case 'sin' 
plot(t,sin(t))
case 'cos' 
plot(t,cos(t))
otherwise
break  %终止，跳出switch语句
end