Searching a Single Digit Number in an Integer

Problem Statement
 Write a C function checkdigit which takes as input an integer
x, and a number dig (an integer between 0 and 9), and checks
if the number x has dig as one of its digits. the function
returns 1 if the digit dig occurs in x, 0 otherwise.
#include<stdio.h>
int checkdig(int n,int search);
int main()
{
  int n,search;
  printf("enter the number ");
  scanf("%d",&n);
  printf("enter key to be searched ");
  scanf("%d",&search);
  if(checkdig(n,search)==1)
    {
      printf("%d occur in %d \n",search,n);
    }
  else
    {
      printf("%d does not occur in %d \n",search,n);
    }
  return 0;
}
int checkdig(int n,int search)
{
  while(n>=1)
    {
      if(search==n%10)
{
 return 1;
}
      n=n/10;
    }
  return 0;
}