Zilog Z80380 - Manual (Page 77)

UM004001-COR1103 4–13
Run Time Environment Library Functions
srand FUNCTION
Header file statement: #include
Syntax: void srand ( unsigned int seed);
The srand function sets the starting point for generating a series of pseudorandom integers.
To reinitialize the generator, use 1 as the seed argument. Any other value for seed sets the
generator to a random starting point.
The rand function is used to retrieve the pseudorandom numbers that are generated. Calling
rand before any call to srand generates the same sequence as calling srand with seed passed
as 1.
Return Value
There is no return value.
strcat FUNCTION
Header file statement: #include
Syntax: char *strcat (char *string1, const char *string2);
The strcat function appends string2 to string1, terminates the resulting string with a null char-
acter, and returns a pointer to the concatenated string (string1).
The strcat function operates on null-terminated strings. The string arguments to this function
are expected to contain a null character (‘\0’) marking the end of the string. No overflow
checking is performed when strings are copied or appended.
Return Value
The return values for this function are described above.
Parameter Description
seed Seed for random-number generation
Parameter Description
string1 Destination string
string2 Source string