Format Single Chat Line

Task

Implement the function format_chat_line.

• Write a function that formats a single chat (without reactions) according to the PA specification
• The format is: [#N YYYY-MM-DD HH:MM] username: message
• Write the result into a provided buffer

Function Signature

// Format a chat as "[#N YYYY-MM-DD HH:MM] username: message"
// buffer should have enough space for the formatted string
void format_chat_line(uint32_t id, char *user, char *message, char *timestamp,
	uint32_t num_reactions, char *buffer);

Note

• Use sprintf() or snprintf() to format the string
• The format is: [#<id> <timestamp>] <user>: <message>
• There should be at least one space between the ID and timestamp
• There should be at least one space between the ] and username
• There should be no space after the username before the :
• There should be one space after the : before the message
• You don’t need to handle alignment/padding (just basic spacing)
• Make sure the buffer is large enough (at least 300+ bytes to be safe)
• Include <stdio.h> for sprintf()

---

Example

Chat	Output
id=1, user=“joe”, timestamp=“2024-10-06 09:01”, message=“hi aaron”	[#1 2024-10-06 09:01] joe: hi aaron
id=5, user=“aaron”, timestamp=“2024-10-06 09:02”, message=“sup”	[#5 2024-10-06 09:02] aaron: sup
id=123, user=“kruti”, timestamp=“2024-10-24 13:01”, message=“hello world”	[#123 2024-10-24 13:01] kruti: hello world

---

Code

#include <stdint.h>
#include <stdio.h>
#include <string.h>
 
void format_chat_line(uint32_t id, char *user, char *message, char *timestamp,
                      uint32_t num_reactions, char *buffer)
{
    sprintf(buffer, "[#%u %s] %s: %s", id, timestamp, user, message);
}