/in/foo.cc: In function 'int Merfge(int*, int, int*, int, int*)':
/in/foo.cc:23:5: error: expected primary-expression before ']' token
   a[]
     ^
/in/foo.cc:27:24: error: 'Search' was not declared in this scope
   if( Search(c,nc, b[i])==-1 )
                        ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:45:30: error: too many arguments to function 'int Merfge(int*, int, int*, int, int*)'
  nb = Merfge(a1,n1,a2,n2,b,nb);
                              ^
/in/foo.cc:18:5: note: declared here
 int Merfge(int a[],int na, int b[],int nb, int c[])
     ^~~~~~