Question

How to get tomorrows date in C

Answer 1

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

int main() {
    // Get the current time
    time_t now = time(NULL);
    struct tm tomorrow;

    // Convert time_t to struct tm
    localtime_r(&now, &tomorrow);

    // Add one day to the current date
    tomorrow.tm_mday += 1;

    // Normalize the time structure (handles month/year overflow)
    mktime(&tomorrow);

    printf("Tomorrow's date is: %04d-%02d-%02d\n",
           tomorrow.tm_year + 1900, 
           tomorrow.tm_mon + 1, 
           tomorrow.tm_mday);

    return 0;
}



/*
run:

Tomorrow's date is: 2025-04-10

*/

 

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