Awkward Loop Design

#include <stdio.h>
#define N 5
int main()
{
    int i, j, space;
    int toPrint = 1;
    for(i = 0; i < N; i++){
        space = N/2+1;
        if(i%2)space = space-i;
        else space = space-i+1;
        for(j = 0; j < space; j++) printf(" ");
        for(j = 0; j <= i; j++){
            printf("%d ", toPrint);
            toPrint = toPrint > 0 ? 0 : 1;
        }
        printf("\n");
    }
}