riodohee

#include <iostream>

using namespace std;

void printArray(const int array[],const int length) // const 변수 바꿀 수 x

{

for (int index = 0; index < length; ++index)

cout << array[index] << " ";

cout << endl;

}

int main()

{

const int length = 5;

int array[length] = { 3,5,2,1,4, };

printArray(array, length);

for (int startIndex = 0; startIndex < length - 1; ++startIndex)

{

int smallestIndex = startIndex;

for (int currentIndex = startIndex + 1; currentIndex < length; ++currentIndex)

{

if (array[smallestIndex] > array[currentIndex])

{

smallestIndex = currentIndex;

}

}

//swap to values in the array

{

int temp = array[smallestIndex];

array[smallestIndex] = array[startIndex];

array[startIndex] = temp;

}

}

return 0;

}

#include <iostream>

#include <cstdlib> //std::radn(), std::srand()

#include <ctime> //std::time()

using namespace std;

/*특정한 정수 사이의 random 넘버*/

int getRandomNumber(int min, int max)

{

static const double fraction = 1.0 / (RAND_MAX + 1.0);

//RAND_MAX는 random넘버를 만들 때 나올 수 있는 가장 큰 숫자 

return min + static_cast<int>((max - min + 1)*(std::rand()*(fraction)));

}

int main()

{

std::srand(static_cast<unsigned int>(std::time(0))); //seed를 바꾸는 

//debuging할 때는 seed를 고정 

for (int count = 1; count <= 100; ++count)

{

cout << getRandomNumber(5,8) << "\t";

if (count % 5 == 0) cout << endl;

}

return 0;

}

#include <iostream>

#include <cstdlib> //std::radn(), std::srand()

#include <ctime> //std::time()

#include <random> 

using namespace std;

int main()

{

std::random_device rd;

std::mt19937_64 mersenne(rd());
        //create a mersenne twister(random time과 비슷한 역할)

std::uniform_int_distribution<> dice(1, 6);

for (int count = 1; count <= 20; ++count)

cout << dice(mersenne) << endl;

return 0;

}