# include & ltstdio.h & gt

# include & lttime.h & gt

# include & ltstdlib.h & gt

int main()

{

int a = 0；

Srand ((unsigned) time (empty));

a = rand()% 40+ 1； /* Select one from 1 to 40 */

printf("%d\n "，a)；

Returns 0;

}