Reading/Writing Excel file

I'm trying to create a MATLAB function that reads data from a excel file, prompts the user to enter two cities, outputs the shorest distance between the two systems, and writes the data to the excel file. I've gotten it to prompt the user for the inputs, but it wont perfpr the calculations or write the data to the xlsx file. Here is the code:

close all

clear all

clc

table = readtable('Connectivity.xlsx','PreserveVariableNames',true);

miles = xlsread('Connectivity.xlsx');

A = (miles > 0);

B = A^2;

fprintf('Cities to choose from: ');

disp(1:length(A));

x = input('Departure city: ');

y = input('Destination city: ');

fprintf('\n');

if x == y

disp('You entered the same Departure city and Destination city!\n')

else

total_routes = A(x,y) + B(x,y);

str1 = sprintf('Total numbers of routes: %d', total_routes);

disp(str1);

disp('Stop Distance');

str2 = sprintf('Routes between City %d and City %d', x, y);

xlswrite('Connectivity.xlsx', {str2}, 2, 'A1');

xlswrite('Connectivity.xlsx', {str1}, 2, 'A2');

xlswrite('Connectivity.xlsx', {'Stop'}, 2, 'A3');

xlswrite('Connectivity.xlsx', {'Distance'}, 2, 'B3');

routes(1:total_routes, 1) = {' '}; % Route name (Direct or City name)

distances(1:total_routes, 1) = 0; % Mile of each route

num_route = 0; % Keep track of row number in matrix “routes” and “distances”

end

If anyone can help me figure out what I'm missing/doing wrong that would be great. Thanks!

[Walter Roberson]

A = (miles > 0);
B = A^2;

A will be logical. Are you sure that you want to use matrix multiplication of two logical arrays?

There are reasons to do that, but I would expect them to be documented.

[Andrew Lester]

Well I was provided with a source code to base everything off of and that was a part of that

[Harry Laing]

total_routes = A(x,y) + B(x,y);

If I'm not mistaken, x and y are names of cities input by the user, so I'm not sure what this line is trying to acheive? Or is the input expected to be a number? As walter said A is a logical array, so surely referencing using names x and y makes no sense?

[Walter Roberson]

if x and y are scalar numeric then the code makes sense for talking about direct travel or travel with one stop.