write a script that evaluate a percentage of component a knowing that component c is always 1% and component b percentage is the input in matlab

Here's a simple script in MATLAB that can be used to calculate component A based on the known percentage of component B:

main.m
% input the percentage of component B
percent_B = input('Enter the percentage of component B: ');

% calculate the percentage of component A
percent_A = 100 - (1 + percent_B);

% display the result
fprintf('The percentage of component A is: %0.2f%%\n', percent_A);
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In this script, we first ask the user to input the percentage of component B. We then use that input to calculate the percentage of component A, which is simply 100% minus the total percentage of components B and C. Finally, we use fprintf to display the result to the user.

Note that this script assumes that component C is always 1%, as stated in the question. If this value changes, the script would need to be modified accordingly.