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//Matthew Strapp
//EE1301
//17 April 2019
//HW 6A: Dice Class
#include <iostream>
#include <cstdlib>
using namespace std;
const int maxNumDie=50;
int* userInputParser(string s);
class Dice {
private:
int min;
int max;
public:
int roll(int min, int max) {
return rand() % (max-min+1) + min;
};
Dice() { //Default constructor for debugging purposes
min=1;
max=1;
}
Dice(int gotMin, int gotMax){
min = gotMin;
max = gotMax;
};
};
int main() {
int rounds;
Dice die[maxNumDie];
int roll[maxNumDie];
int max=0, min=999999, sum=0, sample=0;
double avg;
srand(time(NULL)); // DO NOT WRITE THIS LINE AGAIN OR ANYWHERE ELSE
cout << "What do you want to roll? ";
string s;
getline(cin, s);
cout << "How many rounds do you want to roll? ";
cin >> rounds;
int* pairs = userInputParser(s);
// This will display the array of die information retrieved from user.
// Replace the following code when you submit your solution.
// pairs is an array with the following format:
// {num_dice,
// first_die_start,
// first_die_end,
// second_die_start,
// ... }
double numRolls=0;
for (int j=0; j<rounds; j++) {
int curRoll=0;
numRolls+=1.0;
for(int i=1; i < pairs[0]; i+=2) {
die[i-1] = Dice(pairs[i], pairs[i + 1]);
roll[i-1] = die[i-1].roll(pairs[i], pairs[i+1]);
curRoll += roll[i-1];
}
if (curRoll > max) {
max = curRoll;
}
if (curRoll < min) {
min = curRoll;
}
sum+=curRoll;
}
avg = sum / numRolls;
cout << "Sample roll: " << sample << endl
<< "Minimum roll: " << min << endl
<< "Maximum roll: " << max << endl
<< "Average roll: " << avg << endl;
}
int* userInputParser(string s) {
static int dice[2*maxNumDie+1] = {0}; // array format:
// {num_dice,
// first_die_start,
// first_die_end,
// second_die_start,
// ... }
// max of maxNumDie dice supported
string data[4*maxNumDie]; // Intermediate storage for parsing input string
// count how many '+'s or 'd's there are...
int parts = 0;
for(unsigned int i=0; i < s.length(); i++)
{
if(s[i] == 'd' || s[i] == '+')
{
parts++;
}
}
// ... so we know the number of times to decode values
int index=0;
unsigned d = s.find('d');
unsigned p = s.find('+');
while(d != static_cast<unsigned>(-1) || p != static_cast<unsigned>(-1))
{
bool dFirst = d < p;
if(dFirst)
{
string before = s.substr(0,d); // part before the 'd' (should be just one number)
// figure out what number is after 'd'
int count = 0;
bool foundDigit=false;
for(int i=0; i< static_cast<signed>(s.length()-d-1); i++)
{
if(isdigit(s[count+d+1]))
{
foundDigit=true;
}
if(!isdigit(s[count+d+1]) && foundDigit)
{
break;
}
count++;
}
string after = s.substr(d+1,count); //should be just the number after 'd'
// store these two parts
data[index] = before;
data[index+1] = after;
index+=2;
// remove this part from the string s
s = s.substr(d+count+1); // discard these two parts
}
else // same idea for the '+'
{
// figure out what number is after '+'
int count = 0;
bool foundDigit=false;
for(int i=0; i< static_cast<signed>(s.length()-p-1); i++)
{
if(isdigit(s[count+p+1]))
{
foundDigit=true;
}
if(!isdigit(s[count+p+1]) && foundDigit)
{
break;
}
count++;
}
string after = s.substr(p+1,count); //should be just the number after '+'
// store this part
data[index] = "+";
data[index+1] = after;
index+=2;
// remove this part from the string s
s = s.substr(p+count+1); // discard these two parts
}
// update d and p for next loop interation
d = s.find('d');
p = s.find('+');
}
// now we need to figure out how many dice there are (as 2d4 is 2 dice)
// we will treat "+2" as a die that rolls [2,2]
int diceCount = 0;
for(int i=0; i < parts*2; i+=2)
{
if(data[i][0] == '+')
{
diceCount++;
}
else
{
diceCount+=atoi(data[i].c_str());
}
}
dice[0] = diceCount*2+1; // put size in first index
int ind=1; // index for the "dice" array (as not same as data array)
for(int i=0; i < parts*2; i+=2)
{
// if we have a +, add a "Dice" that has a range of 0
if(data[i][0] == '+')
{
dice[ind] = atoi(data[i+1].c_str());
dice[ind+1] = atoi(data[i+1].c_str());
ind+=2;
}
else // otherwise add however many of the dice requested
{
for(int j=0; j < atoi(data[i].c_str()); j++)
{
dice[ind] = 1;
dice[ind+1] = atoi(data[i+1].c_str());
ind += 2;
}
}
}
return dice;
}
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