matlab刷题，由浅入深（3）

题目

求输入向量×的所有数字的总和

 Examples:

Input  x = [1 2 3 5]
Output y is 11

Input  x = [42 -1]
Output y i 41

matlab解题

函数：

function y = vecsum(x)
    y = sum(x);
    fprintf('y is %d',y);
end

主函数：

% Use this area as a scratchpad to test code that you don't want to submit:
x =[1 2 3 4];
% Or call your function:
vecsum(x);
% Note this code will NOT be used for submit

结果：