text: I've learned LZ77 in theory, know I wanna practice, my first attempt was to code a C++ function that finds the best match when comparing the sliding window with the look ahead buffer, this is what i came up with: (btw it must return a array of int, 0->contains distance to run backwards from the lookahead buffer 1->contains how long the match is, it cant be less then 2)
  Somebody help me at making this function work, it's awful so far. And I can't call it on main without bumping into error report.Somebody help me at making this function work, it's awful so far. And I can't call it on main without bumping into error report.Code:#include <iostream> #include <string> using namespace std; int * find_match(char * sliding_window, char * look_ahead) { int distance = 0; int lenght = 0; // for loop runs every character pointed in var sliding_window // it searches for a character match longer than 2 for(int x = 0; *(sliding_window+x) != '\0'; x++) { if(sliding_window[x] == look_ahead[0]) if(sliding_window[x+1] == look_ahead[1]) if(sliding_window[x+2] == look_ahead[2]) { //if reached here, then it means a match longer than 2 bytes has been found // distance = ???? dont know how to calculate distance lenght++; //previously 2, but 2 has already been checked if it matches, and it does while(sliding_window[x+lenght] == look_ahead[lenght]) lenght++; } if(lenght > 0) // if it's bigger than 0, then it means it's already found a match break; } if(distance != 0 && lenght != 0) { int return_array[] = {distance,lenght}; return return_array; } else { return 0; } } int main() { char * str1 = "Just testing my function."; char * str2 = "I'm just testing."; int lenght_distance[] = find_match(str1, str2); cout << "distance: " << lenght_distance[0]; return 0; }