C/C++ :: How To Get Random Value For Each Loop

Oct 26, 2014

#include
#include
#include
int main () {
int gameplays, n, prize, choice1;

[Code]....

So in this code, the user inputs the amount of games he/she wants the program to simulate. For each game, a "prize" is randomly placed in one out of three doors. My problem is that for each game simulated, the prize is always placed in the same door. How do i fix this? I used the stand function but it still doesn't work.

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C++ :: Random Number Generation In A Loop

Jan 2, 2014

I've researched this quite a bit and the overwhelming answer I've been seeing for a loop generating the same pseudo-random number is that you're seeing the random number generator inside the loop, but that is not the case with me . . . At least not that I can see.

Basically, as I mentioned, I have a loop "birthing" new bunnies in a loop. And all the new bunnies are being created with the same name and other details.

Here is the code:

void BunnyGraduation::breed() {
for (unsigned int male = 0; male < colony.size(); male++) {
if (colony.at(male).getSex() == Bunny::Sex::MALE && colony.at(male).getRadioactiveMutantVampireBunny() != true && colony.at(male).getAge() >= AGEOFCONSENT) {
for (unsigned int female = 0; female < colony.size(); female++) {

[Code] ....

srand(time(0)); is seeded ONCE in the constructor of the bunny object itself. . . Now, come to think of it, the constructor is called every time an object is created . . . And the constructor contains the srand() . . . and the constructor is being called in a loop. . . So therefore, yes, the srand() is being called inside the loop.

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C :: Random Number Generator Inside / Outside A Loop?

Nov 15, 2013

I've been working on a program on and off for around a week now and I've been struggling towards the end of the program.First of all, the program is a maths quiz which generates two random numbers per question.I'll give you one part of my code:

Code:

srand ( time(NULL) ); //seeds the random number generator
int score = 0;
int a = rand()%12 +1; //generates a random num between 1-12
int b = rand()%12 +1;
int c = a+b;
int d;
}

[code]....

I've basically copied the above code 10 times and changed the variables by going through the alphabet e.g.

Code:

int a = rand()%12 +1; //generates a random num between 1-12
int b = rand()%12 +1;
int c = a+b;
int d; all the way to

Code:

int an = rand()%12 +1;
int ao = rand()%12 +1;
int ap = rand()%12 +1;
int aq = an+ao-ap;
int ar;

Now what I'm going to do is remove all the declared variables and create a loop. But my problem is; If I wanted to declare four variables for e.g.

Code:

int a = rand()%12 +1;
int b = rand()%12 +1;
int c = rand()%12 +1;
int d = a+b-c;

Would I place the srand( time(NULL)); inside the loop? it's confusing because I know an example of a basic loop with an array would be:

Code:

#include <stdio.h>
#include <conio.h>
int main(void)
{

int test[5]={21,18,47,21,4};
int I;
int total=0;

for (I=0;i<5;i++)
total += test[I];
}

[code]....

how or where to include the random number generator in the loop and to make it ask 10 questions at random.

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C++ :: Program To Generate Random Number Between 1 To 100 - While Loop Will Not End

Feb 21, 2014

My program asks me to write a C++ program that generates a random number between 1-100, and lets the user guess the number until he/she guesses correctly.

I have every thing done but my loop will not end. I know I have to "update" the loop to end it but I don't know what that means.

#include <iostream>
#include <iomanip>
#include <ctime>
using namespace std;

int main() {
srand(time(NULL)); //the function that generates random numbers

[Code] .....

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C/C++ :: How To Execute For Loop And Generate A Random Number

Oct 24, 2014

I have to write a C++ program that picks a random number between 0 and 49. If the number is even lets say 30, then the computer will display 30, 32, 34, 36... all the way till 100, if its odd lets say 17, then the computer will display 17, 19.. till 99. I got the computer picking a random number, I just can't figure out how to display every other number using a for loop statement. Here's my code for random number generator:
   
#include <iostream>
#include <cstdlib> 
#include <ctime>  
using namespace std;  
int main()  

[Code] ....   

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C/C++ :: Same Random Numbers Being Created Every Time Loop Goes Around

May 20, 2013

one of my project involves loop inside loops and creating random numbers. Here is what I have so far:#include <iostream>

#include <string>
#include <cstdlib>
#include <ctime>

[Code]....

so the program will create a random value for the inflow. The idea is that the internal for loop will continue to run until the fill_level of the reservoir, which starts at 0, hits the capacity. The process of simulating how many years (each iteration of the internal for loop representing a year) is to be repeated 10 times by the parent for loop of the water_level simulation for loop.

The problem is that the random number that is supposed to created are the same number. THey are different every time I run it, but they are the same every time the loops repeat to make a new simulation.

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C# :: Infinite Loop Random Boolean Print Statement

Feb 19, 2014

I am working on a small simple program my program fills up a air plane with customers there is 2 levels 1 and 2 and it will put that person in the spot depending on being picked.

So far i made a boolean airplane with 10 spots I can enter 1 person into the airplane with no problem but then after he sits down i get a infinite loop? I assume i maybe have to use the continue statement I feel like there is something simple that im missing i want to add more people. here is what i have

class Program
{
static void Main(string[] args)
{ bool[] planeSeats = {false, false, false, false, false, false, false, false, false, false };

[Code]......

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C++ :: For Loop - Code Puts Out Switch Statement 5 Times With Random Number

Jan 26, 2014

I am writing for loop with a switch so that scores can be inputted in by a judge. The issue that I am running into is that I will put out an the text then the test happens and the code puts out the switch statement 5 times with random number. Here is what I have written.

Code:
int main() {
int diver;
int option;
int Judge;
cout << "Enter Divers Name:";

[Code] ....

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C++ :: Make 10 Random Numbers Thus Making 10 Random Flips Of Coin?

Aug 31, 2013

I want to make 10 random numbers thus making 10 random flips of a coin. I am getting 10 tails or 10 heads!

Code: #include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;
int main(int argc, const char * argv[])
{

[Code].....

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C++ :: Random Value At Random Time?

Dec 30, 2013

my motive is to get random variable at every start of program.so it does not show same sequence when it run again and again

int main()
{
srand( time ( NULL ) );
cout<<rand();
}

when i run this program in code::block the following program is opening with error in new tab called TIME.H

/*
* time.h
* This file has no copyright assigned and is placed in the Public Domain.
* This file is a part of the mingw-runtime package.
* No warranty is given; refer to the file DISCLAIMER within the package.
*
* Date and time functions and types.
*
*/
#ifndef_TIME_H_
#define_TIME_H_

[Code]....

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C++ :: Why Are Random Values Not Very Random

Nov 26, 2014

I've been working on a little experiment, here is the source: [URL]

The problem that I keep running into is when I run the initPop and generate an individual object, the genome of the next individual is _exactly_ the same as the previous one... which confuses me... Shouldn't each individual be randomly different from the one that preceded it? What am I not right when it comes to generating random values?

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C :: Loop Does Not Work And Program Quits Without Displaying For Loop Function

Oct 13, 2014

We are making a program--but every time we input a value for scanf, the following for loop does not work and the program quits without displaying the for loop's function. We are not getting any errors.

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C# :: Use Loop To Load Two Forms Back And Forth Then Stop At Loop 4

Feb 15, 2015

I have tried to submit this topic before but i didn't submit my whole code and it was removed. So here it is. All I am trying to do is load form2 from form1 then back to form1 from form2 for a certain number of times the get out of the loop. I am new to C-Sharp and it seems as though I cant seem to figure out a way to do this.

Here is form1 and form2 code. I have commented out a few things I have tried.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;

[Code]....

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C :: Extra Loop Being Executed In Do-while Loop

Jul 1, 2013

Code:
#include <stdio.h>
#include<ctype.h>
void try5t(){

char choice;
int choiceint;

[Code] .....

Loop is repeated an additional time as shown in the screenshot:

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C++ :: How Much Milliseconds To Loop Through For Loop

Feb 20, 2014

Given a for loop:

int i;
for(i = 0; i < 1000; i++)
;

How many nanoseconds, or microseconds or milliseconds does it take for each iteration? And why do some use it as a timer mechanism?

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C/C++ :: How To Change For Loop Into Do While Loop

Apr 19, 2014

I already made a nested for loop into a while loop (below this) and now I'm trying to make the outer for loop into a do while loop, but it's not working.

#include <iostream>
using namespace std;
int main () {
int len;
int j;
int i;

[Code]....

And I can't make this code do the same thing. It stops after one loop, instead of continuing to the end. Why won't the loops continue?

#include <iostream>
using namespace std;
int main(){
int len;
cout << "Enter a number: ";

[Code] ....

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C/C++ :: Convert A While Loop To A For Loop?

Mar 25, 2012

I need to convert the following while loop:

count = 1;
while (caloriesForItem != 0, count != numberOfItems )
{
cout<<"Enter the calories: ";
cin >> caloriesForItem;
totalCalories += caloriesForItem;
count++;
}

This is what I have come up with:

totalCalories += caloriesForItem;
for (count = 1; caloriesForItem != 0; count != numberOfItems)
{
cout<<"Enter the calories: ";
cin >> caloriesForItem;
count++;
cout << "Total calories eaten today = " << totalCalories << endl;
}

However the output is not the same?

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C++ :: How To Get Rid Of Random 0s

Dec 11, 2014

I got this program:

#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>
#define N 10
using namespace std;
class custo{

[Code] .....

And its working well but the output is:

Last login: Wed Dec 10 19:54:49 on ttys000
/Applications/CodeBlocks.app/Contents/MacOS/cb_console_runner DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:. /Users/Soul/Documents/School/CISC/Assignment10/bin/Debug/Assignment10
Christians-MacBook-Pro:~ Soul$ /Applications/CodeBlocks.app/Contents/MacOS/cb_console_runner DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:. /Users/Soul/Documents/School/CISC/Assignment10/bin/Debug/Assignment10

Barack Obama DC 100 50 300 2000
Bill DeBlasio NY 250 100 80 5000
Kirsten Gillibrand NY 50 100 200 1000
Chris Chrystie CT 100 200 300 5000
Eric Holder DC 50 80 200 1000
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0

Process returned 0 (0x0) execution time : 0.006 s
Press ENTER to continue.

Where those 0s come from nor how to get rid of them. I'm also having trouble putting the output in table format but thats just a minor issue.

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C++ ::  Random Number Between 7 To 10

Nov 27, 2013

I'm trying to generate random number from 7 to 10 but all i got is "Error C2661: 'rand' : no overloaded function takes 1 argument"

there is my code:

#include "stdafx.h"
#include <iostream>
#include <cstdlib>
#include <time.h>
using namespace std;
void init_Function(); // init function

[Code] .....

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C/C++ :: Array With Random Value?

Jan 7, 2015

i want to create an arry with random value. in 50% times the average of this array is upper of 0.5 and in 50% times the average of this array is lower of 0.5 . i want to write this code in C++. but i dont know what the algorithm is.

My code is this.

#include <algorithm>
#include <cstdlib>
#include <iostream>
int main() {
int a[10] = {0, 1, 2, 3, 4, 5, 6, 7,8 ,9};
std::srand(unsigned(std::time(0)));
}

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C/C++ :: Random Number Is Always 41 Or 42

Nov 11, 2014

When I run this program it always generates the number 41 or 42. Why is this? Even if I add the code

magic = rand()%100 + 1;

to specify a range of 1 to 100 it's still always 41 or 42.

This is exactly the same code my book uses just without the cout << magic statement

#include<iostream>
#include<cstdlib>
using namespace std;

[Code].....

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C++ :: Mathematics Instruction Using Random?

Oct 23, 2013

i have some mathematics instruction to resolve

|z - c| =< r and|z - w| =< d

Because i want just one number , i used randomise

Code:
mini =min((d-w),(c-r));
maxi=max((d+w),(r+c));
z=mini + (rand()%(maxii - minii));

It give me random number but when i use it to calculate another

Code:
f=sqrt(pow(d,2)-pow((z-w),2));

It give me error because many times the "z"is very height

so i get negative inter the sqrt.how i resolve this problem ? shall i add another limit to the Z?

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C++ :: Random Integers (numbers)

Oct 17, 2014

I'm trying to make a C++ program that generate 6 random numbers ( from 100,000 to 999,999 ), okay, so I wrote a few lines..

Code:
srand(time(0));
for (int i = 0; i < 5; i++)
{
std::cout << 100000 + (rand() % 999999) << std::endl;
}

The problem is, that it generates numbers like this:

117,207
123,303
131,083
... etc etc..

They're all starts with 100K, i want them to be an actual random..

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C++ :: Random Numbers Are Not In Specified Range

Nov 9, 2014

My program behaves weird... I wanted to generate 10 random numbers from 1 to 100 each of them bigger than previous, using the while loop and function that returns a random number in specified range.

When I run the program, I get numbers much bigger than 100, even negative number, and numbers are same every time I run the program.

Code:
#include <ctime>#include <cstdlib>
#include <iostream>
using namespace std;
int range(int low, int high);

[Code] .....

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C++ :: Matching Random Number

Mar 27, 2014

When the number is guessed correctly the program doesn't print "You guessed right" ....

Code:
#include"stdafx.h"
#include<iostream>
#include<cstdlib>
#include<ctime>
#include<string>
usingnamespace std;

[Code] ....

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C :: Generating Random Numbers

Oct 19, 2014

I have a program that generates random numbers. After the random number is generated, the program asks if you want to generate another random number. However, if you generate another random number, it is always the same as the first random number. How can I fix this?

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