Average of numbers in C

#include<stdio.h>
#include<conio.h>
main()
{
      int n,c=1;
      float x,avg,sum=0;
      
      printf("How many numbers?\n");
      scanf("%d",&n);
      
      do{
                     printf("x= ");
                     scanf("%f",&x);
                     sum=sum+x;
                     ++c;
      }while(c<=n);
      avg=sum/n;
      printf("The average is %f\n",avg);
      getch();
}