Problems storing, processing and displaying ginput value?

I've got the following code:

clear
clc
close all

Map=imread('Map.Jpg'); 
imshow(Map);
hold on; 

A = zeros(1, 24);
B = zeros(1, 24);
C = zeros(1, 24);

uiwait(msgbox('Choose Point A')); 
[x,y] = ginput(1); %hold on; 
plot(x,y,'r+', 'MarkerSize', 50);
A = ginput(1);
C = pdist2(A,B);

%Value1 = ginput(1);

uiwait(msgbox('Choose Point B'));
[x,y] = ginput(1); %hold on; 
plot(x,y,'r+', 'MarkerSize', 50);
B = ginput(1);
%Value2 = ginput(1);
disp ('Values:')
disp(A);
disp(B);
disp(C);

I'm trying to get it so that: a) I only need to click once instead of twice to get points b) allows me to perform the pdist calculation and output it to the screen

What am I doing wrong?

[KSSV]

YOur A is 1X2 size and B is a vector..so the error.

[DocD]

How do I fix this?

[Adam]

Why are you reusing your variable names for something that appears to be completely unconnected? You create A, B and C as vectors of zeros, then just assign something different to A and attempt to do the same to C except that B is still the original vector, but A has been overwritten.

Use meaningful variable names and this should not happen generally.