C++ Program Help?

How Do You Get This Output When JusT Using 4 Variables, a Loop statement, and 1 scanf. I'm Just New with this Program and I'm Having Trouble Doing This ( My Friend Is Training Me).





Enter a number: 8





Enter a number: 8





Enter a number: 8





Enter a number: 8





Enter a number: 8





Enter a number: 8





Enter a number: 9





Enter a number: 8





Enter a number: 8





Enter a number: 8





Average is : 8.100000

C++ Program Help?
One variable to read in the number (num)


One variable to sum the number (sum = sum + num)





Outside loop one variable for average


avg= sum / loop variable (i)