foo.cc: In function ‘int main()’:
foo.cc:17:22: error: cannot convert ‘long long int*’ to ‘int*’
   17 |         cout<<Search(a,x);
      |                      ^
      |                      |
      |                      long long int*
foo.cc:4:22: note: initializing argument 1 of ‘long long int Search(int*, int)’
    4 | long long Search(int a[],int x)
      |                  ~~~~^~~