#include <stdio.h>
#include <string.h>
int search(const char* SInputFile, char* max_word)
{
char word[256];
int k,bul,len,max_len;
char* p;
FILE* in;
in=fopen(SInputFile,"r");
if (in==NULL)
return -1;
max_len = 0;
while ((k = fscanf(in,"%[A-z]",word)) != EOF)
{
if (k == 0)
fgetc(in);
else
{
len = strlen(word);
if (word[len - 1] == 'E')
{
bul = 1;
for (*p = word; *p; p++)
if (*p < 'A' || *p > 'Z')
{
bul= 0;
break;
}
if (bul == 1 && max_len < len)
{
max_len =len;
strncpy(max_word, word, sizeof max_word);
}
}
}
}
return 0;
}

int main(void)
{
FILE*out;
out=fopen("data2.txt","w");
char SInputFile[]="data.txt";
char max_word[256];
int k;
k=search(SInputFile,max_word);

if (k==-1)
{
printf("=Can't open the file");
return 1;
}

fprintf(out,"Word with a max length: %s\n", max_word);
return 1;
}