escaping infinite loop and return previous step automatically?

5 次查看（过去 30 天）
sermet
sermet 2013-1-4
in here, if I input 0 for a, infinite loops occurs, what I want is escaping this infinite loop and returning previous step which asking me again input a,b,c? I wonder that can matlab execute this automatically? For example after the entering 0 matlab should ask me again a,b,c? automatically.
a=input(' a =? ')
b=input(' b =?')
c=input(' c =?')
while a==0
disp(' equation is first degree, try to input another number except 0')
end
D=b^2-4*a*c
x1=( -b + sqrt(D) )/(2*a)
x2=( -b - sqrt(D) )/(2*a)
if D < 0
disp(...........')
x1
x2
else if D == 0
disp(...........')
x1,x2
else
disp(.............')
x1
x2
end
end

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2013-1-4
编辑：Walter Roberson 2013-1-4
a = 0;
while a==0
a=input(' a =? ')
b=input(' b =?')
c=input(' c =?')
if a == 0
disp(' equation is first degree, try to input another number except 0')
end
end

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by