Hello i want to make a simple program that calculates 3-rd side of a triangle: I want that Matlab to ask me the fist side and i insert a value from keyboard….i want to ask me the second side and i insert the value and then to ask me an angle and i insert a number. Then matlab to give me the 3-rd side based on Pitragora formula on the back Ty so much.
MATLAB: Help me with Input from keyboard
input
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Here's a way to force the user to enter an integer:
% Ask user for a number.
defaultValue = 45;titleBar = 'Enter a value';userPrompt = 'Enter the integer';caUserInput = inputdlg(userPrompt, titleBar, 1, {num2str(defaultValue)});if isempty(caUserInput),return,end; % Bail out if they clicked Cancel.
% Round to nearest integer in case they entered a floating point number.
integerValue = round(str2double(cell2mat(caUserInput)));% Check for a valid integer.
if isnan(integerValue) % They didn't enter a number.
% They clicked Cancel, or entered a character, symbols, or something else not allowed.
integerValue = defaultValue; message = sprintf('I said it had to be an integer.\nI will use %d and continue.', integerValue); uiwait(warndlg(message));end
Perhaps get your numbers from a small GUI like inputdlg() creates:
% Ask user for two floating point numbers.
defaultValue = {'45.67', '78.91'};titleBar = 'Enter a value';userPrompt = {'Enter floating point number 1 : ', 'Enter floating point number 2: '};caUserInput = inputdlg(userPrompt, titleBar, 1, defaultValue);if isempty(caUserInput),return,end; % Bail out if they clicked Cancel.
% Convert to floating point from string.
usersValue1 = str2double(caUserInput{1})usersValue2 = str2double(caUserInput{2})% Check for a valid number.
if isnan(usersValue1) % They didn't enter a number.
% They clicked Cancel, or entered a character, symbols, or something else not allowed.
% Convert the default from a string and stick that into usersValue1.
usersValue1 = str2double(defaultValue{1}); message = sprintf('I said it had to be a number.\nTry replacing the user.\nI will use %.2f and continue.', usersValue1); uiwait(warndlg(message));end% Do the same for usersValue2
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