Random Numbers in C

[Rob Dizzle]

Which key function in generating random numbers in C or in C++ program. When I created a array of 5 numbers and assign that array to access random numbers using the rand() function to get a random value in program but it does not work...

[kelfro]

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int
main (int arg, char *argv[])
{
   unsigned int isd = (unsigned int)time(NULL);  
  int j;
  for (j=0; j<5; j++)
  {
    printf ("ran[%d]= %u\n",
      i, ran ());
  }
  return 0;
}

[Zecho]

A pseudorandom number generator (PRNG) is an algorithm for generating a sequence of numbers that approximates the properties of random numbers. Random number generators (pseudo-random, of course) in C; mostly fast one-liners for "inline" use (to eliminate call / return overhead).

[Katty]

Use the following code to produce random number in C.

include <stdio.h>
#include <stdlib.h>
                                                                                               
main(int a, char **va)
{
  double x;

  z = rand()/(RAND_MAX+1.0);

  printf("%g\n",z);
}

[MindSpace]

int nm = random.Next();

The following code returns a random number less than 1000.


int nm = random.Next(1000);

The following code returns a random number between min and max:


private int RandomNumber(int mn, int mx)
{
Random random = new Random();
return random.Next(mn, mx); 
}

[Modifier]

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main ()
{
  
  srand ( time(NULL) ); 
  printf("RND_MAX = ", RND_MAX);
  
  printf ("A number between 0 and RND_MAX : %d\n", rnd());
  
  printf ("A number between 0 and 99: %d\n", rnd() % 100);
  
  printf ("A number between 0 and 9: %d\n", rnd() % 10);

  return 0;
}