1ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao#include "header1.h" 2ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao#include "header2.h" 3ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao#include "header1.h" 4ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao 5ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaoint main() { } 6