我自己写的函数为什么是错的？

wangzhkk

1. function [y,z]=yzfun(x)
   
2. a = randn(2,1);
   
3. if a(1)*a(2)>=0
   
4.     y = a(1)*x;
   
5. else
   
6.     z = a(2)*x;
   
7. end

复制代码

Error in yzfun (line 2)
a = randn(2,1);
Output argument "z" (and maybe others) not assigned during call to "E:\Matlab\yzfun.m>yzfun".

happy

输出变量数量不对，比如修改为

1. function [y,z]=yzfun(x)
   
2. a = randn(2,1);
   
3. if a(1)*a(2)>=0
   
4.     y = a(1)*x;
   
5.     z = 0;
   
6. else
   
7.     y = 0;
   
8.     z = a(2)*x;
   
9. end

复制代码