MATLAB: “Function” & “fprintf” Help Please (thanks in advance for everyone’s time)

functionhomework

This code works as it is, however the problem statement wanted me to write a function (not a simple script file) and to use the fprintf command to output the values.
My question is, why does this function work even if I commment out the entire function?
Also, how in the world do I implement the command "fprinf"?
Any help would be much appreciated!
% Measures velocity of derby car
% Problem Statement: This function analyzes the data of a pine wood derby car
%
    function[totalavgv,maxavgv,minavgv]=stowers_colbi_PA1(timeinterval,velocitydata);     
      timeinterval=input('Enter Time Intervals as a row vector in seconds[a b c]: ');
      velocitydata =input('Enter Velocity Data as a two dimensional array (matrix) in inches per        second [a b c; d e f]: ');
      avgv = mean(velocitydata);       
      totalavgv=mean(avgv);
      maxavgv= max(avgv);
      minavgv= min(avgv) ;  
      plot(avgv,timeinterval,'+');
      grid on
      title('Average Velocity as Function of Time');
      xlabel('Averae Velocity [in/sec]');
      ylabel('Time Intervals [sec]');
   end

Best Answer

It works because whatever you pass in is ignored - it asks you anyway. So the function statement can be ignored and it's basically a script.
For fprintf:
fprintf('totalavgv = %f\n', totalavgv);
Same for the other variables.
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