07-03.txt

《MATLAB R2007基础教程》 清华大学出版社,包含电子课件,实例原文件,习题答案,都是基于matlab实现

% exchange the value of two numbers without the third variable
function [a,b] = exchange(a,b)
disp('step1:a = a + b');
a = a + b
disp('step2:b = a - b');
b = a - b
disp('step3:a = a - b');
a = a - b
disp('final result:');

>> a=39;

>> b=66;

>> [a,b] = exchange(a,b)