Warhammer | Dice Rolls

/*
    Compile: g++ main.cpp -o main --std=c++11 -O2
*/

#include <iostream>
#include <vector>
#include <algorithm>
#include <math.h>
#include <numeric>
#include <fstream>
#include <string.h>
#include <stdlib.h>
#include <time.h>

using namespace std;

enum dices { skaven = 6, chaos = 4, cursed = 3, bone = 2 };

int roll(const vector<int> &s) {
    int i, r;

    r = 0;

    for(i = 0; i < s.size(); i++) {
        //Roll dices
        if(rand() % 6 + 1 <= s[i])
            r++;
    }

    return r;
}

vector<int> staticsRoll(const vector<int> &s) {
    int i;
    vector<int> r(s.size() + 1, 0);

    for(i = 0; i < 1000000; i++)
        r[roll(s)]++;

    return r;
}

void drawResult(const vector<int> &s, const vector<int> &r) {
    int i;

    cout << "Settings: ";
    for(i = 0; i < s.size(); i++) {
        switch(s[i]) {
            case dices::skaven: cout << "Skaven dice";  break;
            case dices::chaos:  cout << "Chaos dice";   break;
            case dices::cursed: cout << "Cursed dice";  break;
            case dices::bone:   cout << "Bone dice";    break;
        }

        if(i + 1 != s.size())
            cout << ", ";
    }
    cout << endl;

    for(i = 0; i < r.size(); i++) {
        cout << i << " = " << r[i] / 100 / 100.0 << "%" << endl;
    }
    cout << endl;
}

int main() {
    vector<int> settings, result;

    srand(time(NULL));

    settings = {
        dices::skaven, dices::skaven, dices::chaos, dices::chaos,
        dices::chaos, dices::cursed, dices::cursed
    };
    result = staticsRoll(settings);
    drawResult(settings, result);

    /* ------------------------------------ */

    settings = {
        dices::skaven, dices::skaven, dices::chaos, dices::chaos,
        dices::chaos, dices::bone, dices::bone
    };
    result = staticsRoll(settings);
    drawResult(settings, result);

    /* ------------------------------------ */

    settings = {
        dices::skaven, dices::chaos, dices::chaos, dices::chaos,
        dices::bone, dices::bone, dices::bone
    };
    result = staticsRoll(settings);
    drawResult(settings, result);

    /* ------------------------------------ */

    settings = {
        dices::bone, dices::bone, dices::bone, dices::bone,
        dices::bone, dices::bone, dices::bone
    };
    result = staticsRoll(settings);
    drawResult(settings, result);

    return 0;
}