Multiple print outside of loop

I get multiple print of 'The root of the equation is:' even though it is out of the loop

My code is:

clc;

clear all;

%syms x

f=@(x) 54.*(x.^6) + 45.*(x.^5) - 102.*(x.^4) - 69.*(x.^3) + 35.*(x.^2) + 16.*x - 4;
d=1/2*(10^(-5));
flag = false;

a=-2;
b=0;
i=0;

if f(a)*f(b)>=0
        disp('Wrong beginning and end of interval')
        
else    
   while abs(a-b)>= d
      c=a + (b-a).*rand(100,1);
      i=i+1;
      flag=true;
    
     x1=c;
     x2=a;
      if x1.*x2<0
        b=c;
      else 
        a=c;    
     end
     
   end
   
     
    
  
end
if flag 
   fprintf('The root of the equation is:%.5f\n',c); 
   fprintf('Iterations :%d',i);
end

Answer 1

[Walter Roberson]

Your c is a vector because of the rand(100, 1)

None of the code is expecting a vector for c.

Note that if you are trying to generate values in the range 1 to 100 you should be using randi(100) for integer random numbers

[Christina Mil]

Thanks you very much! It works.