# About Array Element Division Problem in Loop

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## About Array Element Division Problem in Loop

 Hi, I m newbee and i have a problem about array element division in loop.Can you help me please? Here my code Get_N_value = input('Enter N value: '); Get_alpha_count =(2*Get_N_value)-4; Get_beta_count =(Get_N_value-1); b_count =(Get_N_value-2); s_count =b_count; for gac=1:Get_alpha_count   sprintf('Enter alpha  %d th value:', gac)   alpha_value(1,gac) = input('',gac); end for gbc=1:Get_beta_count   sprintf('Enter beta %d th value:', gbc)   beta_value(1,gbc) = input('',gbc); end for i_index=1:b_count m=(beta_value(i_index)-beta_value(i_index+1))/beta_value(i_index) end and result: Enter N value: 5 ans = Enter alpha  1 th value: 2 ans = Enter alpha  2 th value: 0 ans = Enter alpha  3 th value: 2 ans = Enter alpha  4 th value: 2 ans = Enter alpha  5 th value: 1 ans = Enter alpha  6 th value: 3 ans = Enter beta 1 th value: 2 ans = Enter beta 2 th value: 2 ans = Enter beta 3 th value: 4 ans = Enter beta 4 th value: 4 m = 0 m = -0.040000 <---- this is actually -2/2 = -1 but octave find -0.04000 m = 0
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## Re: About Array Element Division Problem in Loop

 On Tue, Jul 9, 2019 at 10:46 AM Aziz YÜCELEN <[hidden email]> wrote: Hi, I m newbee and i have a problem about array element division in loop.Can you help me please? Here my code Get_N_value = input('Enter N value: '); Get_alpha_count =(2*Get_N_value)-4; Get_beta_count =(Get_N_value-1); b_count =(Get_N_value-2); s_count =b_count; for gac=1:Get_alpha_count   sprintf('Enter alpha  %d th value:', gac)   alpha_value(1,gac) = input('',gac);try alpha_value(1,gac) = input('')what your are getting is chars not doubles.  end for gbc=1:Get_beta_count   sprintf('Enter beta %d th value:', gbc)   beta_value(1,gbc) = input('',gbc); end for i_index=1:b_count m=(beta_value(i_index)-beta_value(i_index+1))/beta_value(i_index) end and result: Enter N value: 5 ans = Enter alpha  1 th value: 2 ans = Enter alpha  2 th value: 0 ans = Enter alpha  3 th value: 2 ans = Enter alpha  4 th value: 2 ans = Enter alpha  5 th value: 1 ans = Enter alpha  6 th value: 3 ans = Enter beta 1 th value: 2 ans = Enter beta 2 th value: 2 ans = Enter beta 3 th value: 4 ans = Enter beta 4 th value: 4 m = 0 m = -0.040000 <---- this is actually -2/2 = -1 but octave find -0.04000 m = 0 -- DAS
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## Ynt: About Array Element Division Problem in Loop

 Thanks doug, you are right, This is solve my problem Gönderen: Doug Stewart <[hidden email]> Gönderildi: 9 Temmuz 2019 Salı 18:28 Kime: Aziz YÜCELEN Bilgi: [hidden email] Konu: Re: About Array Element Division Problem in Loop   On Tue, Jul 9, 2019 at 10:46 AM Aziz YÜCELEN <[hidden email]> wrote: Hi, I m newbee and i have a problem about array element division in loop.Can you help me please? Here my code Get_N_value = input('Enter N value: '); Get_alpha_count =(2*Get_N_value)-4; Get_beta_count =(Get_N_value-1); b_count =(Get_N_value-2); s_count =b_count; for gac=1:Get_alpha_count   sprintf('Enter alpha  %d th value:', gac)   alpha_value(1,gac) = input('',gac); try alpha_value(1,gac) = input('') what your are getting is chars not doubles.   end for gbc=1:Get_beta_count   sprintf('Enter beta %d th value:', gbc)   beta_value(1,gbc) = input('',gbc); end for i_index=1:b_count m=(beta_value(i_index)-beta_value(i_index+1))/beta_value(i_index) end and result: Enter N value: 5 ans = Enter alpha  1 th value: 2 ans = Enter alpha  2 th value: 0 ans = Enter alpha  3 th value: 2 ans = Enter alpha  4 th value: 2 ans = Enter alpha  5 th value: 1 ans = Enter alpha  6 th value: 3 ans = Enter beta 1 th value: 2 ans = Enter beta 2 th value: 2 ans = Enter beta 3 th value: 4 ans = Enter beta 4 th value: 4 m = 0 m = -0.040000 <---- this is actually -2/2 = -1 but octave find -0.04000 m = 0 -- DAS
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## Re: About Array Element Division Problem in Loop

 In reply to this post by Aziz YÜCELEN m = 0 m = -0.040000 <---- this is actually -2/2 = -1 but octave find -0.04000 m = 0 the operation you're performing at that step is  (50-52)/50 = -0.04you're inputting your beta_value as a character string.  so the value of ascii '2' is numerical 50, and '4' is 52.  you should get familiar debugging with setting breakpoints in your script using the GUI or inserting the 'keyboard' command so that you can inspect variable values in the middle of execution.  Also, look at the help for sprintf.
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## Ynt: About Array Element Division Problem in Loop

 Thank you, I understand why now Gönderen: Nicholas Jankowski <[hidden email]> Gönderildi: 9 Temmuz 2019 Salı 18:33 Kime: Aziz YÜCELEN Bilgi: [hidden email] Konu: Re: About Array Element Division Problem in Loop   m = 0 m = -0.040000 <---- this is actually -2/2 = -1 but octave find -0.04000 m = 0 the operation you're performing at that step is  (50-52)/50 = -0.04 you're inputting your beta_value as a character string.  so the value of ascii '2' is numerical 50, and '4' is 52.   you should get familiar debugging with setting breakpoints in your script using the GUI or inserting the 'keyboard' command so that you can inspect variable values in the middle of execution.  Also, look at the help for sprintf.