Generating different kinds of random things

#include <iostream>
#include <limits>
#include <stdlib.h>
#include <time.h>
#include <iomanip>
#include <tgmath.h>
#include <string>
 
 
using namespace std;
 
int main(int argc, const char * argv[]) {
    int dieFace = 0;
    const int MAX_FACE = 6;
    int randomIntMaxToMin = 0;
    const int RANDOM_THING_MAX = 7;
    const int RANDOM_THING_MIN = -3;
    const int NUMBER_OF_TESTS = 100;
    double randomDouble = 0;
    int colorNameNumber = 0;
    const int NUMBER_OF_COLORS_NAMES = 3;
    const int RED_NUMBER = 0;
    const int YELLOW_NUMBER = 1;
    const int GREEN_NUMBER = 2;
    const string RED_STRING = "RED";
    const string YELLOW_STRING = "YELLOW";
    const string GREEN_STRING = "GREEN";
    const string NONE_STRING = "NONE";
    string randomColorName = "";
 
    srand(static_cast <unsigned int>(time(0)));
    // try the following line instead and run the program twice!
    // srand(42); // Same sequence of random numbers every time (nothing special about 42, just a particular sequence)
 
    cout << "Random values form a 6-sided die:" << endl;
    for (int i = 0; i < NUMBER_OF_TESTS; i++) {
        // Random roll of a 6 sided die
        dieFace = 1 + rand() % MAX_FACE;
        cout << dieFace << endl;
    }
    cout << endl;
 
    cout << "Random INT values between " << RANDOM_THING_MIN << " and " << RANDOM_THING_MAX <<":" << randomIntMaxToMin << endl;
    for (int i = 0; i < NUMBER_OF_TESTS; i++) {
        // some other random thing that is a random INT between some min and max
        randomIntMaxToMin = RANDOM_THING_MIN + rand() % (RANDOM_THING_MAX - RANDOM_THING_MIN + 1);
        cout << randomIntMaxToMin << endl;
    }
    cout << endl;
 
    cout << "Random DOUBLE values between " << RANDOM_THING_MIN << " and " << RANDOM_THING_MAX <<":" << randomIntMaxToMin << endl;
    for (int i = 0; i < NUMBER_OF_TESTS; i++) {
        // some other random thing that is a random DOUBLE between some min and max
        randomDouble = RANDOM_THING_MIN + ((RANDOM_THING_MAX - RANDOM_THING_MIN) * (rand() / (static_cast <double>(RAND_MAX))));
        cout << randomDouble << endl;
       }
    cout << endl;
 
   cout << "Random color names: " << endl;
   for (int i = 0; i < NUMBER_OF_TESTS; i++) {
        // random colors:
        colorNameNumber = rand() % NUMBER_OF_COLORS_NAMES;
        switch (colorNameNumber) {
            case RED_NUMBER:
                randomColorName = RED_STRING;
                break;
            case YELLOW_NUMBER:
                randomColorName = YELLOW_STRING;
                break;
            case GREEN_NUMBER:
                randomColorName = GREEN_STRING;
                break;
            default:
                randomColorName = NONE_STRING;
                break;
        }
        cout << randomColorName << endl;
    }     
 
    system("pause");
 
    return 0;
}
cs-142/random-values.txt · Last modified: 2016/10/07 18:30 by kseppi
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