Question

How to get the first calendar time in C

Answer 1

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

int main(void)
{
    struct tm first = { .tm_mday = 1 };

    mktime(&first);

    printf("%s", asctime(&first));

    return 0;
}




/*
run:

Sun Jan  1 00:00:00 1900

*/

 

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