count_first_place_votes(voters_prefs, voters, candidates_list, candidates);
// Structure to represent a candidate typedef struct candidate { int id; int votes; } candidate_t;
// Function to check for winner int check_for_winner(candidate_t *candidates_list, int candidates) { // Check if any candidate has more than half of the first-place votes for (int i = 0; i < candidates; i++) { if (candidates_list[i].votes > candidates / 2) { return i + 1; } } return -1; } Cs50 Tideman Solution
Tideman is a voting system implemented in the CS50 course, where voters rank candidates in order of preference. The goal of the Tideman solution is to determine the winner of an election based on the ranked ballots. In this report, we will outline the problem, provide a high-level overview of the solution, and walk through the implementation.
printf("The winner is: %d\n", winner);
// Count first-place votes for (int i = 0; i < voters; i++) { for (int j = 0; j < candidates; j++) { if (j == 0) { candidates_list[voters_prefs[i].preferences[j] - 1].votes++; } } } }
// Function to eliminate candidate void eliminate_candidate(candidate_t *candidates_list, int candidates, int eliminated) { // Decrement vote counts for eliminated candidate for (int i = 0; i < candidates; i++) { if (candidates_list[i].id == eliminated) { candidates_list[i].votes = 0; } } } printf("The winner is: %d\n", winner); // Count first-place
// Allocate memory for voters and candidates *voters_prefs = malloc(*voters * sizeof(voter_t)); candidate_t *candidates_list = malloc(*candidates * sizeof(candidate_t));