Is there a way to capture the last value (digit) of the system clock number and use that to generate a random number? Or look at system clock--find last digit (in seconds)--make my variable equal to that digit?
Use the time() function to get the system time. This result modulo 10 returns the last digit of the time value which you can use as a seed for generating random numbers:
time_t t = time(0); // current system time
int seed = t%10; // get last digit
// .. use seed