wap to enter a number and sum of first and last digit of the number .

#include<stdio.h>
#include<conio.h>
main()
{

  int a,b,n,c,sum=0;
  
  printf("enter the number ");
  scanf("%d",&n);

  a=n%10;
  while(n>9)
  {
  n=n/10;
  }
  b=n%10;
  sum=a+b;
  printf("sum = %d",sum);



}

output :
enter the number 45678
sum = 12