Question

How to pick 2 random elements from an array in C++

Answer 1

#include <iostream>

int random_between_range(int first, int last) {
    int number =  rand() % ((last + 1) - first) + first;
 
    return number;
}
 
int main() {
    int arr[] = { 4, 9, 14, 96, 13, 0, 3, 99, 19, 2, 80 };
 
    int size = sizeof(arr) / sizeof(arr[0]);
 
    srand(time(NULL));

    int num2, num1 = arr[random_between_range(0, size - 1)];
 
    do {
        num2 = arr[random_between_range(0, size - 1)];
    } while (num1 == num2);
   
    std::cout << num1 << " " << num2;
}

 
 
/*
run:
 
2 99
 
*/

 

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