I want to know how to do the question 3 for my "C for Engineers " class?

3) PE 06 03 (Linear Searching Arrays) Generate a random array with 15 integers from 50 to 99. Prompt the user to enter a valid integer search "key" between 50-99 and verify the use input. Use the linear search algorithm discussed in class to find the "key" value and array index location of the "key" value. If no value was found prompt the user to enter another number until a value is found. Display the random array to the screen only after the user finds a correct value for comparison. 23