How can I convert a timestamp to a date format in the C programming language?

You can use the time and localtime functions in C language to convert a timestamp to a date format. Below is a simple example code:

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

int main() {
    time_t timestamp = 1597414471; // 2020-08-14 15:34:31 的时间戳
    struct tm *tm_info;

    tm_info = localtime(&timestamp);

    printf("Year: %d\n", tm_info->tm_year + 1900);
    printf("Month: %d\n", tm_info->tm_mon + 1);
    printf("Day: %d\n", tm_info->tm_mday);
    printf("Hour: %d\n", tm_info->tm_hour);
    printf("Minute: %d\n", tm_info->tm_min);
    printf("Second: %d\n", tm_info->tm_sec);

    return 0;
}

In this example, we start by defining a timestamp, then use the localtime function to convert the timestamp into a struct tm structure, which includes information such as year, month, day, hour, minute, and second. Finally, we access the members of the struct tm structure to obtain specific date information.