Two Resistors in Series

%% Two Resistors in Series
% Calculates the electric current and total potential difference across the
%   two resistors. Notes and clarifications at the end of code.

% Inputs and Variables
resis = input('Input resistances in brackets\n');
a = input('Given the Voltage of R1 or R2?\n');
switch a
    case 1
        V(1) = input('Voltage across R1\n');
        I = V(1)/resis(1);
        V(2) = I * resis(2);
    case 2
        V(2) = input('Voltage across R2\n');
        I = V(2)/resis(2);
        V(1) = I * resis(1);
end
Vsum = sum(V);
fprintf(['The current and individual and total voltages are \n', ...
       '%.3e A,  %.3i V, %.3i V, %.3i V'], I, V, Vsum)

%{
The user must enter the resistances in brackets [] for the code to work
The outputs are rounds to three decimal places. This can be adjust through
    changing for removing the .# in the last fprintf line.
The output lists current through both, voltage through the first
    resistor, voltage through the second resistor, and the total
    voltage through the series.
%}