Question

How to pick 2 random elements from an array in C

Answer 1

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
 
int main(void) {
    int arr[] = { 4, 9, 11, 96, 13, 0, 3, 99, 80, 6 };
 
    int size = sizeof(arr) / sizeof(arr[0]);
 
    srand((unsigned int)time(NULL));
 
    int num2, num1 = arr[rand() % (size - 1)];
 
    do {
        num2 = arr[rand() % (size - 1)];
    } while (num1 == num2);
   
    printf("%d %d", num1, num2);
 
    return 0;
}
 
 
 
/*
run:
   
0 96
   
*/

 

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