C language

1. Modify the getAvg() function to supportpassing an array by reference.
   • The parameters of this function should be pointer to a floatarray, and the size of the array.
   • Returns the average of the array.
     
2. Build a function called getScoreFromUser()with the following properties:
   • Asks the user to enter the score
   • scans into a local float variable
   • returns the float value that the user entered.
     
3. Build and present a menu to a user like the following andenclose it into a loop that ends when the Quit option is chosen.Insert a line with your favorite character before and afterprinting the menu.
   
   ***************************
   1. Enter user name.
   2. Enter scores.
   3. Display average score.
   4. Display summary.
   5. Quit
      ***************************
      
4. For Option #1, scanf a string, and store it to a username chararray.
   
5. For Option #2, do the following :
   • Ask the user how many exams they have and store that value intoan int variable.
   • Use a for loop in combination withgetScoreFromUser() to get the user's scores.
     
     Hint: Declare a float array of size 20 to storethe user's scores. If the user wants to enter more than the arraysize we declared, display an error, and have the user re-enter thetest count. Some array members will be left un-used which isokay.
     
     Hint: You can use this inside your for loop:scores_array[i] = getScoreFromUser()
     
   • Use the getAvg() function to calculate theaverage of all the tests the user entered.
     
6. For Option #3, do the following :
   • If the user has already entered test scores, display theaverage of all the test scores.
   • If the user has not yet entered test scores, display an errormessage similar to: \"Please use the menu to enter test scoresfirst.\"
     
7. For Option #4, if the user has not yet entered their name andtest scores, display an error message. Otherwise display theaverage, the letter grade of the average, and the user's name.

   Example: \"Hello Charley, your test scores were 70, 75, 80,85, 90, 95. Your average is 82.5 with letter grade: B.\"
   
   Hint: You can print \"Hello Charley, your test scores were\" first, and then use for loop to print thetest scores, followed by\"Your average is 90.0 with letter grade: A.\"