查找第一个相同的字符

#include <stdio.h>
void find1(char array[ ], char search, char * pa);
void main ()
{
  char a[3]={0};
  int n=10;
  char s;
  char pa[50]={0};
  printf("Please enter %d characters:",n);
  for (int i=0;i<3;i++)
  {
    scanf("%s",&a[i]);
  }
  printf("Enter the search character:");
  scanf("%s",&s);
  char *p=a;
  find1(p,s,pa);
} 
void find1(char array[ ], char search, char * pa)
{ 
   int count=0;
   while(*array!=search)
  {
    array++;count++;
if(count==3)
{
  printf("pa=NULL");
  break;
}