Shuffle a pack of cards

Write a program to shuffle a pack of cards

The approach:-

1. Initialize a cards array and set the seed for rand based on time.
2. For each array index generate a random index and swap the elements.
3. Output the cards array.

C++ program to shuffle a pack of cards

#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;

int main() {
	int cards[52];
	srand(time(0));

	for ( int i = 0; i < 52; i++ ) {
	   cards[i] = i + 1;
	}

	for ( int i = 0; i < 52; i++ ) {
	   int index = rand() % 52;
	   int tmp = cards[i];
	   cards[i] = cards[index];
	   cards[index] = tmp;
	}

	for ( int i = 0; i < 52; i++ ) {
	   cout << cards[i] << " ";
	}
	cout << endl;
	return 0;
}

Output:-

9 16 21 29 23 37 34 15 47 46 4 27 48 12 39 50 11 36 20 24 6 40 30 7 18 32 14 28 26 8 38 19 51 31 49 44 35 3 41 45 1 13 42 25 2 33 52 5 10 22 43 17