question on C. How to deal the cards?

I understand you just take, and randomly generate a "card" and give it to the player. But at the same time, since this is a random process, the cards are repeated - in which there is nothing surprising. Your mistake is that this process is too random - you do not have a deck! You need to first create a deck, enter values ​​into it, and distribute cards from it. In this case, you will need another variable - the number of cards in the deck. Now I will explain the algorithm:

 а = количество карт в колоде b = rand () % a раздаваемая карта = array [b] array [b] = array [a-1] a-- 

I came to this algorithm when I wrote a program that creates sudoku. Thus, your cards will never be repeated. As for the distribution of each suit - it will be a little more complicated. I think for this you will need to create a deck not as a one-dimensional array, but with four lines that symbolize the deck. Then you pull out the first four cards in turn from each row, and the next from a pseudo-random row and pseudo-random column. To prevent the resulting cards from hurting the eyes of the player, shuffle them, and only then show them to the player.

PS That code with random pulling from the deck can not be used (unless it is only for the choice of suit in the case of a four-line array), but first to shuffle it and draw cards in order.

So, what ideas can come in handy from here, it will work on both C and C ++, your task is to redraw in a modern way using OOP.

You can try to do on the array of strings using the methods of their processing, or use lists ... or like this ..

 #include <time.h> #include <stdlib.h> #include <stdio.h> using namespace std; int players_cards[5][14]; // [][] матрица, карты на руках игроков // [][0] выдано карт по мастям // [0][0]количество полностью выданных мастей // [0][] Зарезервировано int players = 6; int deals = 2; // количество раздач после первой void dispenser(int s, int p){ // выдаём карту игроку int offset = rand() % (13 - players_cards[s][0]); // по случайному смещению int card = 1; while(players_cards[s][card] || offset){ // из списка имеющихся карт if(!players_cards[s][card]) offset --; card++; } players_cards[s][card] = p; if (++players_cards[s][0] >= 13) players_cards[0][0]++; // если не осталось карт этой масти, их выбор сокращается } int main(void) { char cards[] = "2 3 4 5 6 7 8 9 0 JQKA"; char suits[] = " HDCS"; srand(time(NULL)); for(int i = 0 ; i <= 4; i++) // обнуляем маccив выданных карт for(int j = 0 ; j <= 13; j++) players_cards[i][j] = 0; for(int p = 1 ; p <= players ; p++) // каждому игроку for(int suit = 1; suit <= 4; suit++) // каждой масти по 1 dispenser(suit, p); for(int k = 0; k < deals && players_cards[0][0] < 4; k++) // и теперь то что осталось раздаём K раз for(int p = 1 ; p <= players && players_cards[0][0] < 4; p++){// каждому игроку int offset = rand() % (4 - players_cards[0][0]); // по случайному смещению int suit = 1; while(players_cards[suit][0] >= 13 || offset){ // из списка имеющихся мастей (выдано <13) if(players_cards[suit][0] < 13) offset--; suit++; } dispenser(suit, p); } printf(" | %s\n",cards); printf("------------------------------------------\n"); for(int i = 1 ; i <= 4; i++){ printf("%c|",suits[i]); for(int j = 1 ; j <= 13; j++) if (players_cards[i][j] > 0) printf("%2d ", players_cards[i][j]); else printf(" "); printf("| All cards: %d\n", players_cards[i][0]); } return 0; } 

Result: (this is a matrix of cards with player numbers)

  | 2 3 4 5 6 7 8 9 0 JQKA ------------------------------------------ H| 4 3 1 4 3 5 2 6 3 6 | All cards: 10 D| 4 1 3 6 2 1 5 5 6 5 | All cards: 10 C| 5 4 3 2 4 2 6 1 | All cards: 8 S| 1 5 2 4 1 6 3 2 | All cards: 8 

Example here: IDEONE