Problems with Pointers in functions.

[patrink]

I've been working on a way to create a random generator for ints and chars, but eventually I gave up and started working on a way to make what was already available (rand() from cstdlib).

I made the functions and put them in a class. I then wanted to make a function which would randomly generate a string, but because I can't return multiple chars, I decided to "point" to a string which was already declared. So far I've been having some problems with calling the function. Every time I do, I get an error saying "Argument of type "Char (*) [255]" is incompatible with parameter of type "char **"". To be honest, I haven't done too much string and pointer manipulation so i'm a bit stumped.

Heres the entire code: (sorry its a bit hard to read)

MainHeader.h

#include <cstdlib>
#include <sys/timeb.h>

class Rand
{
private:
	//system time (__SYSTM) timeb variable for the srand() seed.
	struct timeb __SYSTM;

public:

	// Rand.Int(Minimum number, Maximum number)
	// returns (0 <= __MIN <= NUMBER <= __MAX <= RAND_MAX)
	// example call: Rand.Int(500,1500);

	int Int(int __MIN, int __MAX)
	{
		if (__MIN > __MAX || __MIN < 0 || __MAX > RAND_MAX)
			return -1;

		//gets the system time, and seeds it for rand()
		ftime(&__SYSTM);

		srand(__SYSTM.millitm);

		//returns a number between the min num and the max num starting from the min num
		//eg (100, 150) would return the random number between 100 and 150
		return ((rand() % (__MAX - __MIN) ) + __MIN);
	}

	//Rand.Char(Capitals)
	//returns (CHAR) or (char) or random depending on caps variable
	//example call: Rand.Char(0);

	char Char(int __CAPS)
	{
		//gets the system time , and seeds it for rand()
		ftime(&__SYSTM);
		srand(__SYSTM.millitm);

		//String Buffer is for the randomization of chars, containing lower case at 0-25 and UPPERCASE at 26-52.
		char __SBUF[53] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

		//Caps > 0 means CAPITALS
		if (__CAPS > 0)
			return __SBUF[(rand() % 26) + 26];
		//Caps < 0 means lowercase
		else if (__CAPS < 0)
			return __SBUF[rand() % 26];
		//Caps == 0 means RaNdOm CaPs.
		else
			return __SBUF[rand() % 52];
	}

	//Rand.String(Storage Buffer, Chars to be generated, Size of Buffer, Capitals)
	//returns (STRING),  (string) or random depending on caps variable and length
	//example call: Rand.String(&Buffer, 10, sizeof Buffer, 0);

	int String(char *__BUFR[], int __CHARS, int __SIZOF, int __CAPS)
	{
		//count for the loop, and String Buffer for the Characters.
		int __COUNT = 0;
		char __SBUF[53] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

		if (__SIZOF <= __CHARS || *__BUFR == NULL || __CHARS < 0 || __SIZOF < 0)
			return -1;

		//from 0 to CHARS, put a random character into *Buffer
		for(__COUNT; __COUNT <= __CHARS; __COUNT++)
		{
			//get system time, and seed rand()
			ftime(&__SYSTM);
			srand(__SYSTM.millitm);

			//Caps > 0 means UPPERCASE
			if(__CAPS > 0)
				*__BUFR[__COUNT] = __SBUF[(rand() % 26) + 26];
			//Caps < 0 means lowercase
			else if (__CAPS < 0)
				*__BUFR[__COUNT] = __SBUF[(rand() % 26) + 26];
			//Caps == 0 means RaNdOm CaPs.
			else
				*__BUFR[__COUNT] = __SBUF[rand() % 52];
		}

		//NULL termination
		*__BUFR[__COUNT] = '\0';

		return 0;
	}

} Rand;

Main.cpp

#include <iostream>
#include "MainHeader.h"

using namespace std;

char Buffer[255];

int main()
{
	Rand.String(&Buffer,10, sizeof Buffer, 0);
	cout << Buffer << endl;
	return 0;
}