/in/foo.c: In function 'main':
/in/foo.c:7:2: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
  scanf("%d",&n1);
  ^~~~~
/in/foo.c:7:2: warning: incompatible implicit declaration of built-in function 'scanf'
/in/foo.c:7:2: note: include '<stdio.h>' or provide a declaration of 'scanf'
/in/foo.c:13:2: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
  printf("%d %d",FindiMinPos(a,n1),FindiMinPos(b,n2));
  ^~~~~~
/in/foo.c:13:2: warning: incompatible implicit declaration of built-in function 'printf'
/in/foo.c:13:2: note: include '<stdio.h>' or provide a declaration of 'printf'
/in/foo.c: In function 'Search':
/in/foo.c:37:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
/in/foo.c: In function 'FindiMinPos':
/in/foo.c:35:5: warning: 'min' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(a[i]==x)
     ^
/in/foo.c:18:8: note: 'min' was declared here
  int i,min;
        ^~~