Fixed segfault issue by using MAX_CONNECTIONS instead of 'sizeof'

main.c

@@ -20,7 +20,7 @@ int main() {
 	socklen_t temp_addrlen;
 
 	fd_set read_fd_set;
-	int conn_sockets[MAX_CONNECTIONS] = {0};
+	int conn_sockets[MAX_CONNECTIONS] = {-1};
 	FD_ZERO(&read_fd_set);
 	char buffer[BUFFER_SIZE];
 	User* users = create_user_list("user_file.txt");
@@ -33,7 +33,7 @@ int main() {
 
 	while (true) {
 		FD_ZERO(&read_fd_set);
-		for (int i=0; i < sizeof(conn_sockets); i++) {
+		for (int i=0; i < MAX_CONNECTIONS; i++) {
 			if (conn_sockets[i] > 0) {
 				FD_SET(conn_sockets[i],&read_fd_set);
 			}
@@ -44,7 +44,7 @@ int main() {
 		if (num_conns > 0) {
 			if (FD_ISSET(conn_sockets[0],&read_fd_set)) {
 				int client_sock = accept(conn_sockets[0],&temp_addr,&temp_addrlen);
-				for (int i=0;i < sizeof(conn_sockets); i++) {
+				for (int i=0;i < MAX_CONNECTIONS; i++) {
 					if (conn_sockets[i] <= 0) {
 						conn_sockets[i] = client_sock;
 						break;
@@ -52,13 +52,12 @@ int main() {
 				}
 			}
 
-			for (int i=1; i < sizeof(conn_sockets); i++) {
-				printf("Checking FD: %d\n",i);
+			for (int i=1; i < MAX_CONNECTIONS; i++) {
 				if (FD_ISSET(conn_sockets[i],&read_fd_set)) {
 					int num_bytes_read = recv(conn_sockets[i],buffer,sizeof(buffer),0);
 					if (num_bytes_read <= 0) {
 						close(conn_sockets[i]);
-						conn_sockets[i] = -1;
+						conn_sockets[i] = 0;
 					} else {
 						for (int i=0;i<num_bytes_read;i++) {
 							printf("%c",buffer[i]);