C :: Random Number Syntax In A Struct

Jan 18, 2014

I can’t figure out the syntax on how to generate random numbers for two members of a struct. It seems so simple because I know what I want to do, I just can’t make it work. I have the random generators I want but I don’t know how to pull it over into my struct.

Code:
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
struct student {
int id;
int score;

[Code] ....

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C++ :: Syntax To Use vector Within Struct?

Apr 9, 2014

What is the proper syntax to use a vector within a struct? Here's an example of what I want to do:

#include<iostream>
#include<string>
#include<vector>
using namespace std;
struct myStructure {
float number;
vector<string> nameList();

[Code] ....

There must be some way to clear that vector. Why this doesn't work?

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C :: Prime Number Function - Declaration Syntax Error

Jan 8, 2014

I wrote this program and compiled in turboc, but it gets error"declaration syntax error" .

Code:
#include <stdio.h>
int main()
int isprime(int n)
{
if(n<2)
return 0;

[Code] ....

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C++ :: Random Number Generator - Count How Many Times Each Number Shows Up

Sep 26, 2012

I'm running a game online and designing a program to generate Enemy Stats. Basically, it's supposed to generate 25 numbers between 0 and 7(to represent 8 Attributes on a 25 Point Buy system) and count how many times each number shows up.

Here's what the code looks like:

Code:
#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;
int Generate() {
int r= rand();
int s= r%7;
[Code] ....

And here's two outputs.

1: Code:

12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 12133089220 Stats[0]= 25 Stats[1]= 0 Stats[2]= 0 Stats[3]= 0 Stats[4]= 0 Stats[5]= 0 Stats[6]= 0 Stats[7]= 0 Stats[8]= 0 Disallowed system call: SYS_socketcall

2: Code:

14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 14787708434 Stats[0]= 0 Stats[1]= 0 Stats[2]= 0 Stats[3]= 0 Stats[4]= 25 Stats[5]= 0 Stats[6]= 0 Stats[7]= 0 Stats[8]= 0 Disallowed system call: SYS_socketcall

Note that the number does change, but only between runs.

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C++ :: Random Number Generator Stuck On 1 Number?

Nov 21, 2013

I am working with C++ in Visual Studio. It's my first semester doing anything like this ever. Still, I am embarrassed that I am having trouble with this simple "coin flipping" program. The user tells the program how many times to "flip the coin" & then the program tells the user the results of each flip. You'll see I am randomly generating a 1 or a 2 within the function coinFlip to represent heads or tails. However, the problem is that if the user wants more than one coin flip, the "random" number stays the same for all of them, resulting in all heads or all tails. I am thinking this is an issue with the for loop that I have within the function coinFlip.

Code:

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

[Code] .....

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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++ :: 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 :: Creating Struct Which Represents Complex Number

Feb 26, 2015

1 create a struct called complex which reprensts a complex number . both the real and imaginary compoents should be represented as doubles . ( 1 marks) .

2 write down a function called magnitude which has one parameter ( a struc complex) and a return type of double . it should return the maginude of the given parameter . ( 3marks) .

3 write a function called find_largest which has two parameter (one of type struct complex const * and the other type int) and a return type of struc complex . the two parameter represent an array of complex numbers and number of elements in that array . the function should return elements from array which has largest magnitude . this fucntion must called the magnitude function . ( 5 marks)

4 write a main function . your main fucntion . Your main fucntion should repeately prompt the user for complex number , storing them in an array. you should continuing reading in complex number until the user enters in both componets , at this point you should stop . you should not make an assumptions how many complex number the user will enter , ( i.e use realloc) after reading in complex numbers from the user you should print out real and imaginary components of the complex number with the largest magnitude.

Code:

#include<stdio.h>
struct complex {
double real;
double imag;

[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 :: Generate Random Number Between 50 And 200

Oct 15, 2014

I'm trying to write a program that generates a random number between 50 and 200. I made a program that generates random numbers, but how to make those random numbers be in-between 50 and 200. Any example of a program that generates random numbers that are confined in-between certain values?

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C++ :: Random Number Generator Between 0 And 100

May 27, 2014

I have a random number generator that should genetate 2 numbers between 100 and 0. The first number works fine but the second doesn't, why?

i1 = random() %100;
i2 = random() %100;
while(i1 < 0 && i1 > 100){
if (i1 < 0)
i1 = i1 + random() %100;
if (i1 > 100)

[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# :: Random Number For Quote?

Sep 17, 2014

I have a array that has 10 quotes inside, and I want to put a random number between 0 and 9in these -->[] , so that when I press the button a random quote will be shown.

private void Random_Click(object sender, RoutedEventArgs e) {
string[] Quotes = new string[10]; // List with quotes
Quotes[1] = "Life isn't about getting and having, it's about giving and being.";
Quotes[1] = "Whatever the mind of man can conceive and believe, it can achieve.";
Quotes[2] = "Strive not to be a success, but rather to be of value.";

[Code].....

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C# :: Random Number With No Duplicates?

Oct 12, 2014

I'm making the n puzzle game (15 puzzle), but having a problem generating random numbers without the duplicates.

Random num = new Random();
int rand = num.Next(1, 15);
b.Text = rand.ToString();

eliminating the duplicate numbers and only allowing 1-15 once in each button.

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C/C++ :: Random Number Conundrum

Nov 3, 2014

I've been having 3 days worth of difficulties with a part of my code for a moving-a-robot-around-blocks problem.

No error messages; it runs, it just, sadly, isn't doing what I want it to do.

When I isolate the random-number generating part of the code, it works just fine and give me numbers 0-7. However, when I put those random numbers into another functions to use them as x and y coordinates in the matrix (in order to randomly position 10 blocks, represented by the number 10), and then go to print the matrix (which should be all zeros except for 10 100s), I get a large random number in each position.

#include <stdio.h>
#include <time.h>
int getXCoordinates() //this function gets random x-coordinates in matrix {
int x;
x=rand()%8; // random number 0-7

[Code] ....

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C/C++ :: Random Number To Matrix

May 24, 2014

I made a function that provides random number to a matrix. The function works fine but with one problem, every time i call the function it provides the same numbers to every matrix.

void randomMatNumbers(int **p, int rows, int cols) {
int i, j;
srand(time(NULL));
for(i = 0; i < rows; i++) {
for(j = 0; j < cols; j++)
p[i][j] = (rand() % 199) - 99;
}
}

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C/C++ :: Random Number Of Asterisks Between 0 And 90

Apr 11, 2015

I have a code for random numbers between 0 and 90 but i can't figure out how to change the output for numbers to asterisks. Ex. if the random number is 8 i need it to print 8 asterisks.

#include <stdio.h>
#include <time.h>
#define MINR 0

[Code].....

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C# :: Random Number To 70 Billion

Aug 13, 2014

So in C#, I'm trying to create a random number between 0 and 70billion. However, Random() doesn't work because the value is Long. I've looked at a bunch of solutions online, but it seemed like they weren't allowing values on the low range. I also saw some bit-shifting stuff, but not sure if thats the best way and I don't quite understand how to do it.

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C/C++ :: Get Random Number Under Or Higher 10

Jun 5, 2014

I was trying to get random number under a specific number. I used this code below to get random number under the number 10.is there another way to get this result,too?

#include <iostream.h>
#include <stdio.h>
#include <stdlib.h>
using namespace std;
int main() {
int mynumber = rand() % 10+1 ;
cout << mynumber ;
return 0;
}

is there a way to get a random number, bigger than a specific number(for example,number 10)

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C# :: Saving And Using Random Number?

Sep 27, 2014

I have this random number

List<string> ImageList = new List<string>();
ImageList.Add("Assets/Images/Image_0.jpg");
ImageList.Add("Assets/Images/Image_1.jpg");
ImageList.Add("Assets/Images/Image_2.jpg");

[Code] .....

The problem is that It generates a random number that can be the same as the last time. So I figured out, that I need to save my random number so I can use it later, as a if statement.

If saved number == r then it generates a new number.

how to save my generated number on OnNavigatedFrom method.

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C++ :: Modulus And Random Number Generation?

Apr 13, 2014

I am making a random number generator. I have fixed all issues except for one. I am supposed to ask the user for how many digits the user wants the numbers to have. How many numbers does the user want. Then randomly generate numbers according to what the user entered. So if the user said 2 digits and wanted 4 numbers then it would output 4 random numbers in the range of 10 to 99.

My notes from class show this working correctly. And it does work correctly. But I don't understand the math here or how the modulus effects it. I was able to get 1 and 2 digits to work but once I get to 5 it doesn't generate numbers correctly. it will only generate number s

Code: int min =1;
int max = 9;int number1 = rand();
cout << number1 % max + min << " "; h

Here is the 3 digit code I have. I also need to figure out how to make it unique so no number generates more then once. I think the issue may be that the numbers are not unique and it is generating the same number and that is somehow effecting the numbers it is outputting. It is either that or my math is wrong.

Code:
if (intLength == 5) {
for (int i = 0; i<intQuantity; i++) {

[Code]....

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C :: Random Number Generator Array?

Apr 6, 2013

Write a program that generates an array of 20 random numbers between 1 and 100. Use a loop to output the numbers on the screen with a field width of 4 characters. Write code that will reverse the numbers in the array and then output the numbers to the screen with a copy of the same output loop used with the original numbers.

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C :: Guess Random Number Game

Aug 9, 2013

I have an error on my Guess the random number game.When you got the right answer it shows the "You got the right answer" and shows the "What is the number?" Here is the code.

Code:

#include<stdio.h>
main()
{
srand(time(0));
int x=rand() % 101,guess=0,tries=3;
printf("The computer will generate a random number, try and guess the random number.
}

[code]....

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C :: Generating Random And Different Number In Array

Nov 30, 2014

How to generate random and different number in a range. This is my code:

Code:
#include <stdio.h>#define n 8
#define m 7
int main() {
int i,j,a[n][n];
printf("Relaxed Latin Square (%d,%d)

[Code] .....

When I executed that code, the number is random but not different.

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C :: Storing Random Number Into Array

Dec 16, 2014

Code:

for(int i = 0 ; i < SIZE ; i ++)
{
scanf("%d" , & selection[i]);
srand((unsigned) time(&t));
draw[i] = rand() % 50; //feeling could be a problem with this line of code :::::

}

is it possible to do this. i am trying to get 6 different numbers stored into 6 elements of an array . this is the piece of the code i think there is a problem with. ie my program scans the numbers and then crashes at this point so think it could be something to do with the commented line?

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C :: Can't Generate Number In Random Function

Jun 16, 2013

i just search random function, there are random function using rand();but when i compile this code

Code:

#include <stdio.h>
int main(){
int a;
a = rand();
printf("%d",a);
}

[code].....

i ask to you that is function to generate the number, why the number is cannot generate

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