# How to have individual numbers combine into a larger number

조회 수: 14 (최근 30일)
Methat 2024년 4월 17일
답변: Voss 2024년 4월 17일
So I need to write some code that can combine multiple numbers together example so input1 = 1, input2 = 4 those 2 numbers should then = 14 instead of 5 if that makes sense. Basically I need to combine those numbers instead of adding them.
fprintf('Number of bands (4 or 5)');
disp("Select the colours from below, Enter using number:")
disp('0. Black')
disp('1. Brown')
disp('2. Red')
disp('3. Orange')
disp('4. Yellow')
disp('5. Green')
disp('6. Blue')
disp('7. Violet')
disp('8. Grey')
disp('9. White')
disp('10. Gold')
disp('11. Silver')
Bandtype = input('Please select number of bands (4 or 5): '); %Takes user input
switch Bandtype
case 4
disp('Placeholder')
Didget1 = input('Please select colour of first band (0 - 9):');
Didget2 = input('Please select colour of second band (0 - 9):');
Multiplier = input('Please select the colour of the third band (0-7, 10, 11):');
Tolerence = input('Please select the colour of the fourth band (1-2, 10-11):');
case 5
disp('Placeholder')
Didget1 = input('Please select colour of first band (0 - 9):');
Didget2 = input('Please select colour of second band (0 - 9):');
Didget3 = input('Please select colour of third band (0 - 9):');
Multiplier = input('Please select the colour of the fourth band (0-7, 10, 11):');
Tolerence = input('Please select the colour of the fifth band (1-2, 10-11):');
end
switch Didget1
case 0
Black = 0;
case 1
Brown = 1;
case 2
Red = 2;
case 3
Orange = 3;
case 4
Yellow = 4;
case 5
Green = 5;
case 6
Blue = 6;
case 7
Violet = 7;
case 8
Grey = 8;
case 9
White = 9;
end
switch Didget2
case 0
Black = 0;
case 1
Brown = 1;
case 2
Red = 2;
case 3
Orange = 3;
case 4
Yellow = 4;
case 5
Green = 5;
case 6
Blue = 6;
case 7
Violet = 7;
case 8
Grey = 8;
case 9
White = 9;
end
switch Didget3
case 0
Black = 0;
case 1
Brown = 1;
case 2
Red = 2;
case 3
Orange = 3;
case 4
Yellow = 4;
case 5
Green = 5;
case 6
Blue = 6;
case 7
Violet = 7;
case 8
Grey = 8;
case 9
White = 9;
end
switch Multiplier
end
switch Tolerence
end
if Bandtype < 4 && Bandtype > 5
disp('Invalid input please select 4 or 5!')
else
end

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### 채택된 답변

Ramtej 2024년 4월 17일
Hey,
Simplest approach is to use sprintf function to format the numbers to form a single final string and convert it into double using str2double function.
inputs = [1, 4, 3, 2]; % Example array of numbers
% Concatenate using sprintf
combinedStr = sprintf('%d', inputs);
% Convert to number
combinedNumber = str2double(combinedStr);

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### 추가 답변 (2개)

Bruno Luong 2024년 4월 17일
편집: Bruno Luong 2024년 4월 17일
One way:
UserIput = [1 2 3 10 11];
%% Coding
X = polyval(UserIput, 16);
X % Combine number
X = 74667
clear UserIput % forget the previous data
%% Decoding: Do the revers compute UserInput from X
UserIput = dec2hex(X)-'0';
A = 'A'-'0';
Age = UserIput >= A;
UserIput(Age) = UserIput(Age)-A+10;
% The result
UserIput
UserIput = 1x5
1 2 3 10 11
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Voss 2024년 4월 17일
One option is to use the 's' second input to input, which signifies that the user input is returned as a character vector. Then you can simply horizontally concatenate the inputs together. If you store those inputs in a cell array, that concatenation is easy to do. Here's an example:
fprintf('Number of bands (4 or 5)');
disp("Select the colours from below, Enter using number:")
disp('0. Black')
disp('1. Brown')
disp('2. Red')
disp('3. Orange')
disp('4. Yellow')
disp('5. Green')
disp('6. Blue')
disp('7. Violet')
disp('8. Grey')
disp('9. White')
disp('10. Gold')
disp('11. Silver')
while true % loop until valid Bandtype is given
Bandtype = input('Please select number of bands (4 or 5): '); %Takes user input
if isequal(Bandtype,4) || isequal(Bandtype,5)
% if 4 or 5 is given, exit the loop
break
end
disp('Invalid input please select 4 or 5!')
end
Ordinals = {'first','second','third','fourth','fifth'};
NDidgets = Bandtype-2; % first Bandtype-2 numbers are digits, i.e., Bandtype==4 -> 2 digits; Bandtype==5 -> 3 digits
Didgets = cell(1,NDidgets); % initialize a cell array of the right size
for ii = 1:NDidgets % for loop to get the digits
Didgets{ii} = input(sprintf('Please select colour of %s band (0 - 9): ',Ordinals{ii}),'s');
end
% horizontally concatenate the digits
result = [Didgets{:}];
Multiplier = input(sprintf('Please select the colour of the %s band (0-7, 10, 11): ',Ordinals{NDidgets+1}));
Tolerence = input(sprintf('Please select the colour of the %s band (1-2, 10-11): ',Ordinals{NDidgets+2}));

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