[初学笔记] while loop

while loop is a conditional loop

即系，满足条件时，会一直循环重复执行，，，直到 不满足 条件时才能结束循环

在MATLAB 中 while循环的语法是：

while <expression>   <statements>end

while 循环反复执行程序语句只要表达式为 true。

表达式是 true，当结果不为空，并包含所有非零元素（逻辑或实际数字）。否则，表达式为 false。

a =10;

%while loop execution

while( a <20)

fprintf('value of a: %d', a);

a = a+1;

end

value of a: 10
value of a: 11
value of a: 12
value of a: 13
value of a: 14
value of a: 15
value of a: 16
value of a: 17
value of a: 18
value of a: 19

>>   
alike = input ('how much do you like the dreamy?');
while ((alike < 1) || ( alike > 10))
   fprintf('Error! Invalid input! Please enter number from 1 to 10.\r\n');
   alike = input ('how much do you like the dreamy?');
end

how much do you like the dreamy?

11

Error! Invalid input! Please enter number from 1 to 10.

how much do you like the dreamy?

1