נושא: קצת עזרה בשפת C++

#include <iostream>
#include <string>
using namespace std;

int main()
{
char buffer[20],str[4];
int a=0,b=0,c=0;

cout << "Welcome to Dracula4ever Crackme, the password is (3 words) :";
cin >> buffer;

strncpy(str,buffer,3);
str[3]=NULL;

a=(int)str[0]+(int)str[1]*3+2;
b=(int)str[2]*(int)str[1]*(int)str[0];
c=(int)str[0]+(int)str[1]+(int)str[2];

if( (a==0) && (b==3) && (c==100) )
cout << "\nVery well\n";
else
cout << "\nVery bad\n";

return 0;
}