Help!

here's the question:

A positive integer is said to be a perfect number if it equals the sum of its positive divisors (excluding the number itself). As an example, 6 is a perfect number because its divisors, 1, 2, and 3 sums up to 6.

The first four perfect numbers are 6, 28, 496, 8128.

Write a C program that prompts the user to enter a number and checks if the number is perfect. Your program should run interactively until the user quits. Try to minimize the program execution time by using the least number of iterations for finding the divisors of the users input. Record and report the number of iterations executed for checking if a number is perfect. The valid range of inputs is restricted to any number between 100 and 10,000 (including the boundaries).

My code works only up until "Enter a number between 10 and 10,000" I enter the number and then it does nothing. The screen stays on there rather than executing the full code. Here's my code: int main() { int userNum, i, sum; sum = 0; printf("Enter a number between 100 and 10,000: "); scanf("%d", &userNum); if (userNum 10000) { printf("This number is outside the accepted range. Do you want to continue? (y)"); } char userYorN; scanf(" %c", &userYorN); if (userYorN == 'n') { printf("Goodbye! "); } while (userYorN == 'y'); if (userNum >= 100 && userNum A positive integer is said to be a perfect number if it equals the sum of its positive divisors (excluding the number itself). As an example, 6 is a perfect number because its divisors, 1,2 and 3 sums up to 6. The first four perfect numbers are 6,28,496,8128. Write a C program that prompts the user to enter a number and checks if the number is perfect. Your program should run interactively until the user quits. Try to minimize the program execution time by using the least number of iterations for finding the divisors of the user's input. Record and report the number of iterations executed for checking if a number is perfect. The valid range of inputs is restricted to any number between 100 and 10,000 (including the boundaries). Sample Output Enter a number between 100 and 10,000:1 This number is outside the accepted range. Do you want to continue (y) ?y Enter a number between 100 and 10,000:400 Number 400 is not perfect Number of iterations:200 Do you want to continue (y) ?y Enter a perfect number:496 Number 496 is perfect Number of iterations:248 Do you want to continue (y) ?n Goodbye! 460148.3141108.q3zqy7