Repeating loop until input conditions are met

For my program, I need to input two sides and one angle of a triangle. If the angle input is above 180 degrees, I need to loop back to input a new angle. This process needs to repeat until the condition a1<180 is met.

Here's my program so far, which only prompts the user that the triangle is impossible once

I've looked at other forums on "looping until condition is met", but very few of them deal with inputs, so I don't really know where to begin with a for/while loop.

[Subhamoy Saha]

You have to check whether angle is > 180. If yes then again take input for angle certainly after displaying the message.

take input for angle

start the loop: check whether input value>180

display msg

again take input for angle

end the loop

NB Direct answers cannot be given for textbook problems.

Answer 1

[Sriram Tadavarty]

Hi,

One small change that can be done is to place a while loop for the a1 input and then if a1 < 180, break the loop.

Prototype code:

while 1
    a1 = input('Angle in degrees:'); 
    if a1 < 180 
        break; 
    else 
        disp('Triangle is impossible...'); 
    end 
end

Hope this helps.

Regards,

Sriram

[Soren Lundheim]

Perfect. Thanks!