The Big Programming Thread - Page 53

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

struct DiceConfiguration
{
	int DiceNumber;
	int DiceType;
};

struct DiceThrowsResult
{
	int DiceNumber;
	int Sum;
	int ThrowsResults[];
};

struct DiceConfiguration* GetConfiguration();
struct DiceThrowsResult* ThrowDices(struct DiceConfiguration *config);
void GenerateRandomSeed(void);
int ThrowDice(struct DiceConfiguration *config);
void PrintDiceThrowsResult(struct DiceThrowsResult *result);
void ReleaseMemory(struct DiceConfiguration *config, struct DiceThrowsResult *result);

int main(void)
{
	struct DiceConfiguration *config;
	struct DiceThrowsResult *result;
	
	GenerateRandomSeed();
	
	config = GetConfiguration();
	
	while(config != NULL)
	{
		result = ThrowDices(config);
		
		PrintDiceThrowsResult(result);
		
		ReleaseMemory(config, result);
		
		config = GetConfiguration();
	}
	
	return 0;
}

struct DiceConfiguration* GetConfiguration()
{
	int diceNumber = 0;
	int diceType = 0;
	
	printf("Enter the number of dice to throw (0 to quit): ");
	scanf("%d", &diceNumber);
	
	if(diceNumber == 0)
	{
		return NULL;
	}
	else
	{
		printf("Enter dice type (sides) : ");
		scanf("%d", &diceType);
		
		if(diceType < 2)
		{
			printf("Dice can't have less than 2 sides!\n");
			return NULL;
		}
		else
		{
		struct DiceConfiguration *config;
		config = malloc(sizeof(struct DiceConfiguration));
	
		config->DiceNumber = diceNumber;
		config->DiceType = diceType;
	
		return config;
		}
	}
}

struct DiceThrowsResult* ThrowDices(struct DiceConfiguration *config)
{
	struct DiceThrowsResult *result;
	result = malloc(sizeof(struct DiceThrowsResult) + config->DiceNumber * sizeof(int));
	result->DiceNumber = config->DiceNumber;
	
	for (int i = 0; i < config->DiceNumber; i++)
	{
		result->ThrowsResults[i] = ThrowDice(config);
		result->Sum += result->ThrowsResults[i];
	}
	
	return result;
}

void GenerateRandomSeed(void )
{
	srand((unsigned int) time(0));
}

int ThrowDice(struct DiceConfiguration *config)
{
	return rand() % config->DiceType + 1;
}

void PrintDiceThrowsResult(struct DiceThrowsResult *result)
{
	
	for (int i = 0; i < result->DiceNumber; i++)
	{
		printf("%d ", result->ThrowsResults[i]);
	}
	
	printf("Sum: %d\n", result->Sum);
}

void ReleaseMemory(struct DiceConfiguration *config, struct DiceThrowsResult *result)
{
	if (config != NULL)
	{
		free(config);
		config = NULL;
	}
	
	if (result != NULL)
	{
		free(result);
		result = NULL;
	}
}