Generation of random numbers in C Language

To testProgramTo generate random numbers, find a demo that many people use on the Internet and find that if many random numbers are generated consecutively, most of them are duplicated because they are seed based on the system time, I made a small modification to the program to generate a real random number. After testing, the program rarely repeats.

# Include <stdio. h>
# Include <time. h>
# Include <sys/STAT. h>

# Deprecision max 100

Int my_rand (INT base );

Int
Main ()
{
While (H <30)
{
Day = my_rand (100 );
Cout <day <Endl;
H ++;
Usleep (1000 );
}

Return 0;
}

Int
My_rand (INT Base)
{
Int I = 0;
Usleep (10 );
Srand (unsigned) Time (null) + rand (); // Add a random number to the seed
 
While (I <= 0)
{
I = rand () % base;

}
Return I;
}