Question

How to convert date to Unix timestamp (epoch) in C

Answer 1

#include <stdio.h>
#include <time.h>

int main(void) {
    struct tm t;
    time_t timet;

    t.tm_year = 2022 - 1900;  // Year - 1900
    t.tm_mon = 4;             // 0 = january
    t.tm_mday = 26;           // Day
    t.tm_hour = 17;
    t.tm_min = 19;
    t.tm_sec = 31;
    t.tm_isdst = -1;          // -1 = unknown
    
    timet = mktime(&t);

    printf("%ld\n", (long)timet);
    
    return 0;
}



/*
run:

1653585571

*/

 

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