Go Back N protocol in c

On-campus and online computer science courses to Learn the basic concepts of Computer Science.This tutorial will cover c ,c++, java, data structure and algorithm,computer graphics,microprocessor,analysis of algorithms,Digital Logic Design and Analysis,computer architecture,computer networks,operating system.

code in C:

#include<stdio.h>
int main()
{
	int windowsize,sent=0,ack,i;
	printf("enter window size\n");
	scanf("%d",&windowsize);
	while(1)
	{
		for( i = 0; i < windowsize; i++)
			{
				printf("Frame %d has been transmitted.\n",sent);
				sent++;
				if(sent == windowsize)
					break;
			}
			printf("\nPlease enter the last Acknowledgement received.\n");
			scanf("%d",&ack);
			
			if(ack == windowsize)
				break;
			else
				sent = ack;
	}
return 0;
}

output:-

enter window size
8
Frame 0 has been transmitted.
Frame 1 has been transmitted.
Frame 2 has been transmitted.
Frame 3 has been transmitted.
Frame 4 has been transmitted.
Frame 5 has been transmitted.
Frame 6 has been transmitted.
Frame 7 has been transmitted.

Please enter the last Acknowledgement received.
2
Frame 2 has been transmitted.
Frame 3 has been transmitted.
Frame 4 has been transmitted.
Frame 5 has been transmitted.
Frame 6 has been transmitted.
Frame 7 has been transmitted.

Please enter the last Acknowledgement received.
8
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