#include <stdio.h>
#include <string.h>
#include <stdlib.h>         

int main()
{

FILE *pfile = fopen("packet.txt","r");
fseek (pfile, 0, SEEK_END);
int filesize = ftell (pfile);
fseek (pfile, 0, SEEK_SET);

char mystring [filesize];
char fname[100];
while(!feof(pfile)) 
{

fgets(mystring,filesize, pfile);
if (strncmp("filename ",mystring,9) == 0)
{
int counter = 0;
for (int i = 0 ; i < filesize;i++)
{
fname[i] = mystring[9+i];
if (mystring[9+i] == '\n')
{
fname[i] = 0;
break;
}
}

FILE *pnfile = fopen(fname,"w");

while (true)
{
fgets(mystring,filesize,pfile);
if (strncmp("endfile",mystring,7) == 0)
{

break;
}
fputs(mystring,pnfile);
}

}

}

}