Q51

#include <stdio.h> int foo(int S[],int size) { if(size == 0) return 0; if(size == 1) return 1; if(S[0] != S[1]) return 1+foo(S+1,size-1); return foo(S+1,size-1); } int main() { int A[]={0,1,2,2,2,0,0,1,1}; printf("%d",foo(A,9)); return 0; } The value printed by the given $C$ program is ___________. (Answer in integer)