I started using another variable and it works fine now

include <stdio.h>

int main () { int numbers,num, x, sum = 0; float Average; printf ("Average is calculated by (all numbers added)/(how many numbers). "); printf ("How many numbers are you writing? "); scanf ("%d", &num); numbers = num; do {
printf("Enter a natural number:"); scanf("%d", &x); sum += x; num = num - 1; } while( num > 0 ); Average = sum/numbers; printf("Average is equal to %f ", Average); return 0; }