C++ :: How Many Random Numbers Make Up A 100

Jun 21, 2013

Assuming you have an array of these values x=[16,18,23,24,39,40] how would you write a function to generate random numbers that can add up to a 100? I need to know how many random numbers can add up to a 100.

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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++ :: How To Make Random Number To Be Different For X And Y

Sep 6, 2014

I got problem with the loop and Q(remains same = Q1 in output). How to make the random number to be different for x and y???

#include<stdio.h>
#include<time.h>
#include<math.h>
#include<stdlib.h>
int Random();
void Position(int z,int y);

[Code] ....

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C++ :: How To Make Random Letters With A Vector

Mar 9, 2014

I am supposed to make a scrabble game and randomize 10 of the letters.

Here's my code:
class Spinner
Spinner::Spinner(string things[], int numThings[], int n)
{
currentPosition = 0;

[Code].....

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Visual C++ :: How To Make Random Array To Not Repeat

Feb 17, 2013

Here is my code for a simple game. paste it and try it.

#include <iostream>
#include <string>
#include <ctime>
#include <cstdlib>
using namespace std;
int main (void) {
stringg[4],

[code]...

What they do (enter 4 actions)?

";
for (int ai = 0; ai < 4; ai++)
getline(cin, a[ai]);
cout << "

Where is happening (enter 4 locations)?

";
for (int li = 0; li < 4; li++)
getline(cin, l[li]);
for (int c = 0; c < 4; c++)
cout << g[rand() % 4] << " and " << b[rand() % 4] << " are " << a[rand() % 4] << " from a " << l[rand() % 4] << endl;
return (0);
}

At the end in the 4 lines some of the names, actions and locations repeat. How do I make them to not repeat and use every name that you will enter? do I need random_shuffle? How can I integrate it in my code?

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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 :: 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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C :: Generate Random Numbers

Mar 17, 2013

I'm trying to generate random numbers so that I can assign people to teams. So far I have come up with this

Code:

int generateTeam(){
int i, teamNumber, c, n;
for (c = 0; c <= 5; c++) {
n = rand()%100 + 1;
}

[code]....

}//end generateTeam I'm not sure how to make it so that I can exclude the previous random number when generating the next one. As an example, I have 22 students and I get the number 19. Now I can't have 19 again because that guy already has it.

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C++ :: Arrays Getting Random Numbers

Oct 30, 2013

Ok so Im suppose to make this program were the user inputs the size of the array then the user sets a certain range min and max for random numbers to be generated. I have a function named fillarray()

#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
int fillarray();

[Code] ....

Whenever i run the program i keep on getting a loop for the size of the array.

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C++ :: Generating Big Random Numbers In C

Feb 16, 2013

I want to generate big random numbers in C(not C++ please).By "big" I mean integers much bigger than srand(time(NULL)) and rand() functions' limit(32767).

I tried writing: (note:I am not able to see "code" tag button in this editor,so I am not using it)

//****
int randomnumber;
srand( time(NULL) );
randomnumber = (( rand() % 33 ) * ( rand() % 33 ) * ( rand() % 33) * ( rand() * 33) * (rand() % 33 )) + 1
//****

But I have doubts about it's randomness quality.Also there is another problem,the program can't know the maximum random number it should use before user input,so maximum random number may need to use much smaller maximum random number according to user input.

Is there a better algorithm to create big random numbers in C?

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C++ :: Adding Random Numbers?

Nov 12, 2013

I am designing a math program for kids. I want the program to produce 2 random numbers and check the sum of these numbers against the user's guess. I have the generating random numbers portion complete. What's the coding procedure to compare the sum to the user's guess?

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C++ :: Not Getting Random Numbers Every Time

Feb 5, 2014

This is my program i have to choose for random number between 1-25 and display them the program works perfectly just that every time i run its always the same numbers.

#include <iostream>
#include <cstdlib> // include library to use rand
using namespace std;
int main(){
int winner1; // declare variables
int winner2;

[Code] ....

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C++ :: How To Get 5 Random Numbers Horizontally

Dec 13, 2013

i wrote this code but don't know if the numbers i array for p will generate in that order. how to get 5 random numbers horizontally and insure that 7,15, 22,27,31 will not generate in that exact sequence?

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <stdio.h>
#include <time.h>
using namespace std;
int main()
{

[Code]...

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C++ :: Generating Big Random Numbers In C

Feb 15, 2013

I want to generate big random numbers in C(not C++).By "big" I mean integers much bigger than srand(time(NULL)) and rand() functions' limit(32767).

I tried writing: (note:I am not able to see "code" tag button in this editor,so I am not using it)

//****
int randomnumber;
srand( time(NULL) );
randomnumber = (( rand() % 33 ) * ( rand() % 33 ) * ( rand() % 33) * ( rand() * 33) * (rand() % 33 )) + 1
//****

But I have doubts about it's randomness quality.Also there is another problem,the program can't know the maximum random number it should use before user input,so maximum random number may need to use much smaller maximum random number according to user input.

Is there a better algorithm to create quality big random numbers in C?

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C++ :: Generate Random Numbers To A File?

Apr 3, 2013

The program is to generate random numbers to a file and will have one integer parameter, Open a file and then using a loop write the required number of random numbers to the file. Scale the random numbers from 1 and 100 inclusive. Then closes the file .The last function will read the numbers in the file into your program. so far i have

Code: #include <iostream>
#include <string>
#include <iomanip>
#include <ctime>
#include <fstream>
#include <cstdlib>

[Code] .....

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C++ :: Generating Random Numbers In Parallel

Nov 8, 2013

I generate a series of random numbers in parallel (using OpenMP), but depending on what number of threads I invoke, I get a different result. From that I conclude that I have made an error somewhere!

Here is the MWE, which generates a number between 0..1 and increments a variable if the generated variable is larger than 0.5:

Code:
#include <random>
typedef std::uniform_real_distribution<double> distr_uni;
#define max_threads 1
using namespace std;

[Code] ....

When I set max_threads=1 I get 50027, but when max_threads=60 (on a machine that supports it....) I get 50440.

The sensitive RNG and its engine I have declared within the parallelized area, so it's not really clear to me where the error can possibly be.

Looking for error that is apparently there?

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C :: Bubble Sort With Random Numbers

Nov 6, 2014

i'm trying to fill an array with random numbers and then sort them via bubblesort. it seems to work so far. the problem is, that i seem to get the same numbers for the same input. somehow the randomness isn't working.

Code:

#include <stdio.h>
#include <stdlib.h>
int main() {
int a, b, c, d, e, f;
}

[code]....

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C :: Converting Random Numbers Into Chars?

Apr 3, 2013

I am having difficulty completing 7th last line below I marked the line with an arrow.

Code:
int main(void) {
int MaxNum, /*number of random nos to generate */
i, /*index */
value,

[Code].....

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C :: Check Random Numbers To Appear Once Or Twice Only In Each Row Or Column

Oct 25, 2013

Code:

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>
int main()
#define rows 9
#define columns 9

[code]....

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C :: Store Random Numbers In Array

Jan 11, 2015

i cannot print the values stored in the array ?

Code:
#include<stdio.h>
#include<math.h>
#include<time.h>
#include<stdlib.h>
double randf();

[Code] ....

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C :: Output Calculation (random Numbers)

Mar 24, 2014

Why do i keep getting wrong results

Code:
#include "stdafx.h"#include <stdio.h>
#include <string.h>
nt main(void){
char name[40];
int numbers[50];

[Code] .....

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C :: Find Average Of Random Numbers

Aug 17, 2013

I have the random values down but when I try to assign randValue to another integer I get an error.I want to make an inner loop where I find 5 random number 50 times and print the average of those numbers.

I know I have the bare bones of the below, but without giving me a huge shove in the right direction can I have a poke? I have been programing for three months now. I have noticed when I do simple fun projects I learn more then what my professor assigned to me. The class is over but I want to keep building.C++ starts in one week...

Code:

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define NUMBERS 5

int main(int argc, const char * argv[]) {
float randValue = 0.0;
int i;

[code]....

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C :: Generating Random Numbers Without Repeating?

Sep 20, 2014

Inside my loop is this

srand(time(NULL))
a=rand()%10;

So it will generate numbers again and again as the loop goes on but it always repeat some numbers. My question is, how would you generate numbers without repeating? Somebody told me that i have to use auto increment, but i really have no idea about that.

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C :: Program Seems To Be Crashing At Random Numbers

Mar 3, 2014

When I go to run the Fibonacci function ( fib ), it begins to return incorrect calculations towards the higher numbers, but then seems to correct itself for a little bit, but then does it again and ultimately crashes. And the program seems to be crashing at random numbers. Sometimes the it will make it up to F(55), other times it will only get to F(20).

Also, when I go to run the program on a Linux server, it segfaults, but it doesn't when I just run it on my IDE. the function adds two arrays with individual digits together. It does this to allow the program to add numbers that would exceed the boundaries of INT_MAX.

Here is the header file "Fibonacci.h":

Code:

#ifndef __FIBONACCI_H
#define __FIBONACCI_H
typedef struct HugeInteger
{
// a dynamically allocated array to hold the digits of a huge integer
int *digits;
// the number of digits in the huge integer (approx. equal to array length)
int length;
} HugeInteger;
}

[code]....

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C++ :: Program That Keeps Generating Two Random Numbers Between 1 And 10

May 6, 2013

#include <ctime>
#include <iostream>
#include <cstdlib>
using namespace std;
int main() {

[Code] ....

Write a program that keeps generating two random numbers between 1 and 10 and asks the user for the product of the two numbers, e.g.: "What is 4 x 6?". If the user answers correctly, the program responds with "Right!"; otherwise, it displays: Wrong! 4 x 6 = 24.

Generate as many pairs of numbers as specified and get the answers from the user for each. If at any time, both numbers are the same as last time, generate two new numbers before asking for the answer. Continue generating 2 new numbers until at least one is different from last time.

After presenting the number of pairs of numbers specified and getting the answers, display how many the user got right; e.g.: You got 4 of 5 right. Then, ask if he or she wants to play again, like so: "Do you want to play again? [y/n]". If the user answers with 'y' or 'Y', it again reads the number of questions to ask and generates that many pairs of numbers and reads the answers like before. If the answer is n or N, it quits generating numbers. If the answer is anything but y, Y, n or N, it tells the user to enter one of those letters until it is.

When the user decides to quit and has got less than 75% of all the questions right, the program displays the multiplication table (1x1 through 10x10) before terminating.

After displaying the table, randomly generate two numbers between 1 and 10, display their product and first number and ask the user to guess the second as more practice. For example, the program will generate 7 and 9 and will display 63 and 7 and the user must guess the second number (i.e.: 9). Do this 3 times. Do not repeat code. Use a loop to do this 3 times.

Use a nested for loop to display the table; a bunch of cout statements will not be acceptable. You must also use a loop for any part that calls for repetition such as generating 5 pairs of numbers.

The following is a sample interaction between the user and the program:

Enter the number of questions to ask: 5

1. What is 3 x 9? 27
Right!

2. What is 2 x 7? 14
Right!

3. What is 8 x 9? 63
Wrong! 8 x 9 = 72

4. What is 6 x 3? 21
Wrong! 6 x 3 = 18

5. What is 2 x 9? 18
Right!

You got 3 out of 5 right which is 60%.

Play agian? [y/n] n

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