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c++ random number

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Bloody Bird answered on May 16, 2020 Popularity 10/10 Helpfulness 3/10

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c++ random number

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#include<stdlib.h>
#include<ctime>
using namespace std;
//Generate random numbers
int main(){
	srand(time(0));
	for (int i = 0;  i < 10; i++){
		cout<< (rand() % 10) + 1<<" ";

Popularity 10/10 Helpfulness 3/10 Language cpp

Source: Grepper

Tags: c++ random

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Contributed on Nov 19 2021

Bloody Bird

0 Answers Avg Quality 2/10

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c++ random

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#include <iostream>
#include <cstdlib>  //required for rand(), srand()
#include <ctime>    //required for time()
using namespace std;

int main() {
    srand(time(0));     //randomizing results... (using time as an input)
    
    const int totalNumbersGenerated = 30;
    const int minRange = 1, maxRange = 20;

    cout<<"\nPrinting "<<totalNumbersGenerated<<" random integer numbers (from "<<minRange<<" to "<<maxRange<<"):\n";
    
    for(int i=1;i<=totalNumbersGenerated;i++){
        //generating random number in specified range (inclusive)
        cout<<1+((rand () % maxRange) + minRange - 1)<<" ";
    }
    
    cout<<endl;
    return 0;
}

Popularity 10/10 Helpfulness 7/10 Language cpp

Source: Grepper

Tags: c++

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Contributed on May 11 2022

ALeonidou

0 Answers Avg Quality 2/10

c++ random

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#include <cstdlib>
#include <iostream>
#include <ctime>
 
int main() 
{
    std::srand(std::time(nullptr)); // use current time as seed for random generator
    int random_variable = std::rand();
    std::cout << "Random value on [0 " << RAND_MAX << "]: " 
              << random_variable << '\n';
}

Popularity 10/10 Helpfulness 5/10 Language cpp

Source: en.cppreference.com

Tags: c++

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Contributed on May 16 2020

Cautious Cormorant

0 Answers Avg Quality 2/10

how to make a random number in c++

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

Popularity 10/10 Helpfulness 5/10 Language cpp

Source: Grepper

Tags: c++

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Contributed on Apr 25 2021

A Wombat of sorts

0 Answers Avg Quality 2/10

random c++

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#include <cstdlib>
#include <ctime>
#include <iostream>

using namespace std;

int main() {
  srand((unsigned) time(0));
  int randomNumber = rand();
  cout << randomNumber << endl;
}

Popularity 9/10 Helpfulness 5/10 Language cpp

Source: www.bitdegree.org

Tags: c++

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Contributed on May 18 2022

TheBeautiful World

0 Answers Avg Quality 2/10

c++ random

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v1 = rand() % 100;         // v1 in the range 0 to 99 (included)
v2 = rand() % 100 + 1;     // v2 in the range 1 to 100 (included)
v3 = rand() % 30 + 1985;   // v3 in the range 1985-2014 (included)

// So in general case :
v4 = rand() % x + y;       // v4 in the range y to y+x-1 (included)

// So for a range from a to b (included) you need to write :
v5 = rand() % b-a+1 + a

// Or you can imagine that for this :
v6 = rand() % m + n
/* It's a range of m numbers that start at 0 (from 0 to m-1) 
   where we added n to both side. 
   Which become a range of m numbers that start at n (from n to m-1+n) */

Popularity 9/10 Helpfulness 4/10 Language cpp

Source: cplusplus.com

Tags: c++ random rando

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Contributed on Dec 10 2022

Heavysaur

0 Answers Avg Quality 2/10

c++ random number

Comment

#include <random>

typedef std::mt19937 MyRNG;  // the Mersenne Twister with a popular choice of parameters
uint32_t seed_val;           // populate somehow

MyRNG rng;                   // e.g. keep one global instance (per thread)

void initialize()
{
  rng.seed(seed_val);
}

int main() {
	std::uniform_int_distribution<uint32_t> uint_dist;         // by default range [0, MAX]
	std::uniform_int_distribution<uint32_t> uint_dist10(0,10); // range [0,10]
	std::normal_distribution<double> normal_dist(mean, stddeviation);  // N(mean, stddeviation)
  
  	while (true){
		std::cout << uint_dist(rng) << " "
            	<< uint_dist10(rng) << " "
            	<< normal_dist(rng) << std::endl;

	}
  
}

Popularity 10/10 Helpfulness 4/10 Language cpp

Source: Grepper

Tags: c++

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Contributed on Mar 26 2022

Maou Shimazu

0 Answers Avg Quality 2/10

c++ random generator

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// random_device example
#include <iostream>
#include <random>

int main ()
{
  std::random_device rd;

  std::cout << "default random_device characteristics:" << std::endl;
  std::cout << "minimum: " << rd.min() << std::endl;
  std::cout << "maximum: " << rd.max() << std::endl;
  std::cout << "entropy: " << rd.entropy() << std::endl;
  std::cout << "a random number: " << rd() << std::endl;

  return 0;
}

Popularity 9/10 Helpfulness 4/10 Language cpp

Source: cplusplus.com

Tags: c++

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Contributed on Jun 30 2022

Felipe Cravero

0 Answers Avg Quality 2/10

Generating random numbers in c++

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#include <iostream>
using namespace std;
int main()
{
   int sz;
   cout<<"Enter the size of array::";
   cin>>sz;
   int randArray[sz];
   for(int i=0;i<sz;i++)
      randArray[i]=rand()%100;  //Generate number between 0 to 99
  
   cout<<"\nElements of the array::"<<endl;
  
   for(int i=0;i<sz;i++)
      cout<<"Elements no "<<i+1<<"::"<<randArray[i]<<endl;
   return 0;
}

Popularity 9/10 Helpfulness 4/10 Language cpp

Source: www.codespeedy.com

Tags: c++

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Contributed on Jun 27 2022

Mosopefoluwa Adebawojo

0 Answers Avg Quality 2/10

Generate a random number C++

Comment

int i=rand()%10;
cout<<"Random number::"<<i<<endl;

Output::
Random number::6

Popularity 9/10 Helpfulness 2/10 Language cpp

Source: www.codespeedy.com

Tags: c++

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Contributed on Aug 20 2022

Ameer Jamal

0 Answers Avg Quality 2/10

c++ random number

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