Step by Step solution about How to resolve the algorithm Date format step by step in the C programming language

The provided C program demonstrates various ways to format and print the current date and time using the time.h library. Here's a breakdown of the code:

1. Include Header Files:

   • The program includes the necessary header files:
     • stdlib.h for standard library functions like exit
     • stdio.h for input/output functions like printf
     • time.h for time-related functions

2. Define Constants:

   • MAX_BUF: This constant represents the maximum size of the buffer used to store formatted dates and times.

3. Main Function:

   • The program entry point is the main function.

4. Variables:

   • buf: Character array with a size of MAX_BUF used to store formatted dates and times.
   • seconds: Variable to store the current time in seconds since the Epoch (January 1, 1970).
   • now: Pointer to a tm structure that represents the current date and time.

5. Date and Time Formatting:

   • The program uses the time and localtime functions to obtain the current time and convert it to a tm structure.
   • It then separately formats and prints the date and time using different methods:
     • Using printf: Prints the date in the format "YYYY-MM-DD" and "Day, Month DD, YYYY".
     • Using strftime: Formats the date and time according to a specified format string ("%A, %B %e, %Y") and stores the result in the buf array.

6. Print Results:

   • The program prints the formatted dates and times to the console.

7. Exit Status:

   • The program returns EXIT_SUCCESS (0) to indicate successful execution.

#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#define MAX_BUF 50

int main(void)
{
  char buf[MAX_BUF];
  time_t seconds = time(NULL);
  struct tm *now = localtime(&seconds);
  const char *months[] = {"January", "February", "March", "April", "May", "June",
                          "July", "August", "September", "October", "November", "December"};

  const char *days[] = {"Sunday", "Monday", "Tuesday", "Wednesday","Thursday","Friday","Saturday"};

  (void) printf("%d-%d-%d\n", now->tm_year + 1900, now->tm_mon + 1, now->tm_mday);
  (void) printf("%s, %s %d, %d\n",days[now->tm_wday], months[now->tm_mon],
               now->tm_mday, now->tm_year + 1900);
  /* using the strftime (the result depends on the locale) */
  (void) strftime(buf, MAX_BUF, "%A, %B %e, %Y", now);
  (void) printf("%s\n", buf);
  return EXIT_SUCCESS;
}