String diff

/* 
 * File:   diff.cpp
 * Author: borovec
 *
 * Created on 18. listopad 2008, 16:29
 */
 
#include <iostream>
 
using namespace std;
 
bool diff ( const char * s1, const char * s2, bool cs ){
 
 
    while(*s1!='\0' || *s2!='\0'){
 
        if(isspace(*s1)){
            s1++;
            continue;
        }
        if(isspace(*s2)){
            s2++;
            continue;
        }
 
        if(cs){
            if(*s1!=*s2) return false;
        }else {
            if(*s1!=*s2 && toupper(*s1)!=*s2 && tolower(*s1)!=*s2) return false;
        }
        s1 ++;
        s2 ++;
 
    }
 
   return true;
}
 
/*
 * 
 */
int main(int argc, char** argv) {
 
  cout << diff ( "Stejne retezce", "   S t   e\tjn\ner e tezc\te ", true );
    // true
  cout << diff ( "Stejne retezce", "   S t   e\tjn\ner e tezc\te ", false );
    // true
  cout << diff ( "Stejne retezce", "   S T   e\tJn\neR e TeZC\te ", false );
    // true
  cout << diff ( "Rozdilne retezce", " R\to\tzd i l n e R e te z\nce", true );
    // false
  cout << diff ( " Rozdilne retezce ", " Ruzne retezce", false );
    // false
  cout << diff ( "Stejne retezce", " S T e\tJn\neR e TeZC\te ", true );
    // false
    return (EXIT_SUCCESS);
}