блок схема

#include <iostream.h>
#include <stdio.h>
#include <conio.h>
#include <string.h> 
#include <windows.h>
int i;
void crypt();
void decrypt();
void create();
void main ()
{
int select;
do
{
cout << "This program crypt and decrypt text";
cout << endl
<< " MENU"
<< endl << endl
<< "1 - Create your file\n"
<< "2 - Open and crypt your file\n"
<< "3 - Open and decrypt file\n"
<< "0 - Exit\n\n";
 
cout << "Select : ";
cin >> select;
cout << endl;
if (select < 0 || select > 4)
{
cout << "Invalid number !" << endl;
cout << endl
<< "==================================="
<< endl
<< "Press <Enter> !" << endl;
getch();
system("cls");
continue;
}
switch (select)
{
case 1 :
create();
break;
case 2 :
crypt();
break;
case 3 :
decrypt();
break;
}
}
while (select !=0 );
}
void crypt()
{
FILE *in;
FILE *out;
char path[50],save[50],select[4];
char c[1000],a[1000];
int size=0;
puts("press path to file: ");
gets(path);
in = fopen (path, "r");
if (in == NULL)
cout << "ERROR\n";
while(feof(in)==0) 
{
fgetc(in);
++size;
}
fseek(in,0,0);
while (feof(in)==0)
{
for(i=0; i<size; i++)
c[i]=fgetc(in);
}
c[i-1]='\0';
cout << "================================================================================"
<< "Text in your file : "
<< c <<endl
<< "================================================================================"
<< endl << endl;
for (i=0; i<size; i++)
{
a[i]=c[i]+35;
} 
a[i-1] = '\0'; 
cout << "=========================================================================="
<< endl
<< "Crypted text : "
<< a
<< endl
<< "=========================================================================="
<< endl
<< "Save the file? (Yes \\ No)"
<< endl;
gets (select);
if (strcoll(select, "Yes") == 0 || strcoll(select, "yes") == 0 ||
strcoll(select, "Y") == 0 || strcoll(select, "y") == 0)
{
 
cout << endl
<< "Select your path for saving file: "
<< endl;
gets(save);
if (save[1] != ':' || save[2] != '\\' ||
save[strlen(save)-1] != 't' ||
save[strlen(save)-2] != 'x' ||
save[strlen(save)-3] != 't')
{
cout << "Invalid path " << endl;
cout << endl
<< "==================================="
<< endl
<< "Press <Enter> !" << endl;
getch();
system("cls");
}
else
{
out = fopen (save, "w+");
fputs(a, out);
cout << endl << "File created ! " << endl;
fclose(out);
cout << endl
<< "==================================="
<< endl
<< "Press <Enter> !" << endl;
getch();
system("cls");
}
}
else
{
cout << endl << "File not saved !" << endl;
cout << endl
<< "==================================="
<< endl
<< "Press <Enter> !" << endl;
getch();
system("cls");
}
fclose(in);
}