random in c 2b 2b

1min + ( std::rand() % ( max - min + 1 ) )

1#include <iostream>
2#include <stdlib.h>     
3#include <time.h> 
4using namespace std;
5
6int main()
7{
8	int num;
9	srand(time(0));
10		num = rand() % 10 + 1;
11		cout << num << endl;
12}
13

1#include <cstdlib>
2#include <iostream>
3#include <ctime>
4 
5int main() 
6{
7    std::srand(std::time(nullptr)); // use current time as seed for random generator
8    int random_variable = std::rand();
9    std::cout << "Random value on [0 " << RAND_MAX << "]: " 
10              << random_variable << '\n';
11}

1/* rand example: guess the number */
2#include <stdio.h>      /* printf, scanf, puts, NULL */
3#include <stdlib.h>     /* srand, rand */
4#include <time.h>       /* time */
5
6int main ()
7{
8  int iSecret, iGuess;
9
10  /* initialize random seed: */
11  srand (time(NULL));
12
13  /* generate secret number between 1 and 10: */
14  iSecret = rand() % 10 + 1;
15
16  do {
17    printf ("Guess the number (1 to 10): ");
18    scanf ("%d",&iGuess);
19    if (iSecret<iGuess) puts ("The secret number is lower");
20    else if (iSecret>iGuess) puts ("The secret number is higher");
21  } while (iSecret!=iGuess);
22
23  puts ("Congratulations!");
24  return 0;
25}

1// Add thus to with the headers
2mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
3// Generate a function that will give values between l and r inclusive
4auto dist = uniform_int_distribution<int>(l, r);
5// get the random number using dist(rng);

1#include <iostream>
2#include <stdlib.h>
3#include <time.h>
4using namespace std;
5int main() {
6	srand(time(NULL)	);
7	const char arrayNum[7] = {'0', '1', '2', '3', '4', '5', '6'};
8	int RandIndex = rand() % 7;
9	cout<<RandIndex<<endl;
10	return 0;
11}