VB program by array to find the index of an array if number not found than display number not found

Write a program to find the index of a given number from an array of 10 elements. The should display "number not found" if the given number is not present

Array elements = 78,96,6,5,100,5,2,11,1,9

[a.i.rajpoot]

Thank you so much sir for this guidance ☺️