clc ; clear ; vec = [32 45 67]; vec (5) = 89; disp ( vec ); in matlab

To execute the given commands in MATLAB, you can follow these steps:

1. Open MATLAB console or MATLAB editor.
2. Type the following commands one by one and press enter after each command:

main.m
clc;  % clears the command window
clear;  % clears all the variables from the workspace
vec = [32, 45, 67];  % defines a vector named "vec" with values 32, 45, and 67
vec(5) = 89;  % assigns the value 89 to the 5th element of the vector "vec"
disp(vec);  % displays the vector "vec"
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After executing these commands, the vector vec will be displayed as [32, 45, 67, 0, 89] where the 5th element is 89 and the 4th element is a default value 0.

Note: In the given commands, you need to use commas , instead of spaces to separate the elements of the vector vec.