// test rand()
//
#include <stdio.h>
#include <stdlib.h> // rand(), srand(), RAND_MAX
#include <time.h>   // time()

int main( void)
{
  int t = time(0); printf( "t = %i\n", t);

  srand(t);

  for( int i = 0; i < 10; ++i) {
    // printf( " %i", rand() ); // raw
    printf( " %i", rand() % 10 + 1 ); // integers 1...10
    // printf( " %g", ((double)rand()/RAND_MAX)*1.5 - 0.75 ); // double -0.75 ... +0.75
  }
  putchar( '\n');
}

/* sample runs:

$ ./a.out
t = 1664880643
 1 3 3 5 1 7 10 1 2 8

$ ./a.out
t = 1664880647
 4 4 9 8 2 6 3 10 10 7

$ ./a.out; ./a.out
t = 1664880652
 2 5 2 6 10 8 2 9 1 9
t = 1664880652
 2 5 2 6 10 8 2 9 1 9

*/