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#include <iostream>
#include <fstream>
using namespace std ;
int lungime_cuvinte ;
int numar_cuvinte ;
bool isLetter( char ch )
{
if ( (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') )
return 1 ;
return 0 ;
}
int main()
{
FILE *fi = fopen( "text.in" , "r" ) ;
FILE *fo = fopen( "text.out" , "w" ) ;
char ch ;
while(!feof(fi))
{
ch = fgetc(fi) ;
if( ch == ' ') ++ numar_cuvinte ;
if(isLetter( ch ))
++ lungime_cuvinte ;
}
fprintf( fo , "%i\n" , lungime_cuvinte / (numar_cuvinte + 1 ) ) ;
fclose(fi) ;
fclose(fo) ;
return 0 ;
}