packet sniffer code in C

[kali]

this is kali a new member to this forum..
iam an undergrad studd and wrking with a opacket sniffer to capture data transmitted using a hardware...
the file saved in the sniffer is a binary file with the following format:
the first [4] bytes is the packet count
the enxt [4] bytes are time stamp
the next [128]bytes is payload..
iam interested in decoding or rather parsing the time stamp which is in microseconds.
any help in the form a C code wud be gr8tly appreciated...
thanx

[Banfa]

You mean something like

unsigned long milliseconds = 0;
 
milliseconds |= ((unsigned long)packet[4])<<24;
milliseconds |= ((unsigned long)packet[5])<<16;
milliseconds |= ((unsigned long)packet[6])<<8;
milliseconds |= (unsigned long)packet[7];
 

[kali]

You mean something like

unsigned long milliseconds = 0;
 
milliseconds |= ((unsigned long)packet[4])<<24;
milliseconds |= ((unsigned long)packet[5])<<16;
milliseconds |= ((unsigned long)packet[6])<<8;
milliseconds |= (unsigned long)packet[7];
 

iam not sure if that is what is want...but it is like parsing a binary file....
since i have no experience in programming iam finding it a bit tough..