#include <stdio.h>
#include <time.h>
 
time_t getElapsedSecond(int yyyy, int mm, int dd, int hh, int nn, int ss){
    struct tm workdt;
    workdt.tm_isdst = -1; // summer time flag
    workdt.tm_year = yyyy - 1900;
    workdt.tm_mon = mm - 1;
    workdt.tm_mday = dd;
    workdt.tm_hour = hh;
    workdt.tm_min = nn;
    workdt.tm_sec = ss;
    return mktime(&workdt);
}
 
int main(void) {
	time_t tnow = getElapsedSecond(2017, 8, 2, 18, 29, 00);
	printf("%ld\n", tnow);
	return 0;
}
 

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