I would like the program to display square like this

I would like the program to display square like this

i      A              B               C            e              
1  1.500000  3.875000  0.500000
2  1.750000  6.609375  0.250000
3  1.875000  8.216797  0.125000
4  1.937500  9.085693  0.062500
5  1.968750  9.537079  0.031250
6  1.984375  9.767086  0.015625
7  1.992188  9.883178  0.007812
8  1.996094  9.941498  0.003906
9  1.998047  9.970726  0.001953
10 1.999023  9.985357  0.000977
11 1.999512  9.992677  0.000488
12 1.999756  9.996338  0.000244
13 1.999878  9.998169  0.000122
14 1.999939  9.999084  0.000061
15 1.999969  9.999542  0.000031
16 1.999985  9.999771  0.000015
17 1.999992  9.999886  0.000008
18 1.999996  9.999943  0.000004
19 1.999998  9.999971  0.000002
20 1.999999  9.999986  0.000001

A = input('Enter A: ');
B = input('Enter B: ');
func = @(x) exp(x)-2*cos(x); 
e = 1;
fileID=fopen('fic.txt','w')
while e>0.0001  
  display(A)
  display(B)
  C  = (A+B)/2
  FC = func(C);
  FB = func(B);
  if(FC*FB>0)
      B = C;
  else
      A = C;
  end
  e = (abs((FB-FC)/FB))*100
  fprintf(fileID,'%6f %6f %6f %6f\r\n',[A,B,C,e]);
end
fclose(fileID)

[Walter Roberson]

What difficulty are you encountering?

Answer 1

[Jan]

All I see at first glance the first column differs from your needs only?

count = 1;
while e>0.0001  
  ...
  fprintf(fileID,'%d %.6f %.6f %.6f %.6f\r\n', count, A, B, C, e);
  count = count + 1;
end