Serial Key Generation with a format.

generatekey.cpp

int generateKey(char* dest,char* format,unsigned int seed)
{
	if(dest && format)
	{
		srand(seed);
		int len = strlen(format);
		for(int i = 0; i < len; i++)
		{
			switch(format[i])
			{
			case '#':
				dest[i] = (char)((rand() % 9) + '1');
				break;
			case 'A':
				dest[i] = (char)((rand() % 26) + 'A');
				break;
			case 'a':
				dest[i] = (char)((rand() % 26) + 'a');
				break;
			case '-':
				dest[i] = '-';
				break;
			case '_':
				if((rand() % 2) == 0)
				{
					dest[i] = (char)((rand() % 9) + '1');
				}
				else
				{
					dest[i] = (char)((rand() % 26) + 'A');
				}
				break;
			default:
				switch(rand() % 3)
				{
				case 0:
					dest[i] = (char)((rand() % 9) + '1');
					break;
				case 1:
					dest[i] = (char)((rand() % 26) + 'A');
					break;
				case 2:
					dest[i] = (char)((rand() % 26) + 'a');
					break;
				}
				break;
			}
		}
		dest[len] = 0;
		return 1;
	}
	return 0;
}