Confuse on while and for loop with interval that starts with 0

Hello fellas, i guess i need some help for my class work.

I have to write a MATLAB script that compute the required force to lift an object, with a rope pulled across a fixed cylinder.

Here are the given information

T1 is the weight of object in Newton. 
A is the degree traveled
CF is the coefficient of friction

T1=500N A=[0,720] CF=0.3

Here is the script that i have

%This program will compute the force required to lift the weight across the

%pulley from 0 to 720 degrees, and plot it as a graph.

clear %clear workspaces

clc %clears command window

T1= input('Weight of the object in Newton');

CF= input('Coefficient of friction');

Np=input ('Spacing of A points in DEG');

A=1:Np:720;

for K=1:length(A)

      B=CF*A;
      T2=T1*(exp(B));
      while A<1
          T2=T1
      end
  end
  plot(A,T2)
  title('Degree vs required force')
  xlabel('Degree')
  ylabel('Required force')
  grid

Here is my question. What should i do in order to show the angle 0 in the graph too? I tried to start with 0, but MATLAB said it must be positive real integer. The forces are extremely large, and it doesn't show very clearly in the graph. Is there anyway to scale the graph, and show the information more clear?

One last question. how do i use the fsprintf to show the answer of angle 0?

Please help! I am confused! thanks for people who are trying to help me!

Answer 1

[Rick Rosson]

Please try:

   A = 0:Np:720-Np;

HTH.

Rick