C library function rand()

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

int main () {
   int i, n;
   time_t t;
   
   n = 5;
   
   srand((unsigned) time(&t));


   for( i = 0 ; i < n ; i++ ) {
      printf("%d\n", rand() % 50);
   }
   
   return(0);
}

Output

38
45
29
29
47

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