A subtle bug--what is the output?

subtle-bug.c

#include <stdio.h>
 
int array[]={ 34, 2, 54, -6, -49};
 
#define S sizeof(array)/sizeof(array[0])
 
int main()
{
    int d = -1;
 
    if( d < S )
        printf("apple\n");
    else
        printf("banana\n");
    return 0;
}