i have code for ploting the spectrogram of a resampled audio but the program showing error .

if true
  % code
end
this is the code i tried ;
[audio, fs1] = audioread('audio2.wav');
sound(audio,fs1);
 ts1=1/fs1;
  N1=length(audio);
  Tmax1=(N1-1)*ts1;
  t1=(0:ts1:Tmax1);
  fsu1=fs1/(N1-1);
  f1=(-fs1/2:fsu1:fs1/2);
  figure;
plot(t1,x),xlabel('Time'),title('Original audio');
fs2 = (20/441)*fs1;
audiore=resample(x,2000,44100);
sound(audiore,fs2);
 ts2=1/fs2;
 N2=length(audiore);
 Tmax2=(N2-1)*ts2;
 t2=(0:ts2:Tmax2);  
 fsu2=fs2/(N2-1);
  f2=(-fs2/2:fsu2:fs2/2);
 figure;
 plot(t2,audiore),xlabel('Time'),title('resampled audio');
function outputSpectrogram(input)
[audioresam, fs] = audioread('audiore');
  audioMono = (audioresam(:, 1) + audioresam(:, 2)) / 2;

    spectrogram(audioresam, 256, [], 25, 2000, 'yaxis');

    title('spectrogram of resampled audio')
   end

it showing the error like this "">> resam Error: File: resam.m Line: 1 Column: 1 Function definitions are not permitted in this context.""

how to rectify it??