In C, create a program that asks the user consecutively to enter up to 20 numbers.

i.e.:

"Enter a number: 5

Enter a number: -7

. . .

Enter a number: 0"

Store these numbers in an array of size 20. Find the sequence sum and average of this array. When 0 is entered, the program should stop taking in values and compute the sum and average of only what is entered until then.