[C/C++] srand 函數

功能：產生亂數

/* srand example */
#include <stdio.h>      /* printf, NULL */
#include <stdlib.h>     /* srand, rand */
#include <time.h>       /* time */

int main ()
{
    printf ("First number: %d\n", rand()%100);
    srand (time(NULL));
    printf ("Random number: %d\n", rand()%100);
    srand (1);
    printf ("Again the first number: %d\n", rand()%100);

    return 0;

}


參考出處：

http://www.cplusplus.com/reference/cstdlib/srand/?kw=srand