#include "stdafx.h"
#include <stdio.h>
#include <ctype.h>
#include <conio.h>
 
int main ()
{
	FILE * f;
int nmax = 0, pos = 0, wpos = 0,n = 0;
char chr = '\0';
 
        printf(">LAB_3(VAR_3)\r\n");
        if(!(f = fopen("test.txt","r+")))
                printf("\tERROR : file not exist or already open\r\n");
        else
        {
                while(!feof(f))
                {
                        fread(&chr,1,1,f);pos = ftell(f);n = 0;
                        while(isalpha(chr) && !feof(f))
                        {
                                fread(&chr,1,1,f);
                                n++;
                        }
                        if(nmax < n)
                        {
                                wpos = pos;
                                nmax = n;
                        }				
                }
                fseek(f,wpos - 1,SEEK_END);
				printf("max: %d", nmax);
				fprintf(f, "\n %d \n", nmax);
				fread(&chr,1,1,f);pos = ftell(f);n = 0;			
                while(isalpha(chr) && !feof(f))
                {
                        fread(&chr,1,1,f);
                        printf("%s",chr);
                }
                printf("\r\n>END OF PROGRAM\r\n");
        }
        scanf("%c",&chr);
		fclose (f);
		getch ();
		return 0;
}