simple data link layer


#include<stdio.h>
#include<conio.h>
int main(){
	int w,s=0,ack,i;
	printf("enter window size\n");
	scanf("%d",&w);
	while(1){
		for(i=0;i<w;i++){
			printf("frame%d has been transmitted\n",s);
			s++;
			if(s==w)
			break;
		}
		printf("\n after last acknowledment received\n");
		scanf("%d",&ack);
		if(ack==w)
		break;
		s=ack;
	}
	getch();
	return 0;
}