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 :: Check Same Integer In Row And Column In Matrix

Jan 8, 2015

I am new in c programming and my teacher gives me home word to do. the home work is to create dynamic matrix that check if i have same number in row or in column. for example the matrix

1 2 3
2 3 1
3 1 2

is legal matrix and this matrix is illegal

1 3 3
2 1 3
3 2 1

I created the matrix and sent it to function but there I don't know how build the 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 :: Check How Many Times Numbers In Array Are Listed

Dec 24, 2013

How can I check how many times the numbers in the array are listed?

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C++ :: If Else Statement To Check Multiple Model Numbers

May 2, 2013

I need to create a if else statement to check multiple model numbers (200+)... How can i build this? I basically want the user to enter their model number and if its on the list they get a approved or denied message.

So far I have this, the "if(model == 9002||1002)" doesnt seem right, it needs to basically check 200+ model numbers... am I even on the right track?

Code:
#include <iostream>
using namespace std;
int main(){
int model;
cout << "Enter model" << endl;

[Code] .....

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C++ :: How To Error Check If User Input Is Letters And Not Numbers

Jun 9, 2014

How do I error check if the user is inputting letters and not numbers? For example, if the user inputs "Lab.txt" I need to display an error message. If they input "Lab2part2.txt" then this is correct and what I want.

I've found a lot of information online on how to error check for numbers or a single letter (EX: 1,2,3, etc. or 'A' 'B' 'C') but nothing for actual WORDS or maybe I should refer to it as a string of characters?

Is there any way to do this? Because my program requires I ask the user to input the name of the file. But the way my code is currently set up is even when the user inputs the wrong file name it still opens the file. I want to prevent this from happening so my thought was to error check user input.

/*Program to determine company's weekly payroll*/

#include <iostream>
#include <string>
#include <fstream>
using namespace std;
void OpenTheFile() {
ifstream inputFile;
string filename;
char letter;
int number;

[Code] .....

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C/C++ :: Check Rational Or Irrational Numbers After Taking Square Root?

Aug 4, 2014

I tried to check the rational or irrational numbers after we take the square root. i dont get the formula. for eg. squareroot of 64 is 8 and it is rational. square root of 2 is irrational. how to check it in c++..

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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++ :: 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++ :: 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 :: 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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