C/C++ :: Integer Division As Opposed To Real Division?

Sep 28, 2013

I have the following details
double x= 1.5
double y= -1.5
int m= 20
int n= 4

my question is 5 * x - n / 5 at which what would n / 5 equal to, I think its zero since its integer division? or would the 5 be considered a real number?

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C :: Cannot Get A Division To Work

Feb 7, 2014

what I do I cannot get a division to work:

Code:

//END RANGE INPUT
long double End;
printf("
Please enter the start of the range (Lower Bound):
");

[Code]...

No matter what I input for the values of 'Start', 'End' and 'Interval', the value of 'SizeL' always seems to be -2.

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C :: How To Find A Remainder Of A Division

Jun 11, 2013

I want to find the remainder of the division between a and b, but without using the reminder operator a%b.I thought to subtract b from a as long as a>b, that will give the remainder, but I don't know how to write it in code.

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C/C++ :: How To Get Decimal Division With 2 Variables

Oct 19, 2014

How do i get this with decimal part?:

for(i=1;i<=4;i++){
      printf("%d
",m);
      s = s + m/i
      m = m + 2;  
      }
m/i?

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C++ :: Operation With Big Numbers (remainder Of Division)

Apr 22, 2014

I have to build a program that calculates the remainder of the expression

(2^10)!/((2^10-500)! * 500!)

when divided by 10^9+7

where x^y = x*x*x*x...*x (y times)
and x! = x*(x-1)...*1

How can I do that? I know how to calculate the remainder of x! and the remainder of y!, but I do not know how t calculate the remainder of x!/y!. I can´t even store this in a variable because x! is very large.

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C/C++ :: Divide A Number By 128 Without Using Division Operator

Mar 8, 2013

Question about instead of using the division operator to display the output of user"s input....

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C++ :: Simple Multiplication And Division Not Evaluating Correctly

May 29, 2013

At one point in my C++, non-CLR program, the following code:

Code:

unsigned int size = 3;
float maxX = (float)(int(size-1))/2.0f;
std::cout << maxX;

outputs 107. Is it something about a conversion from unsigned int to float?

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C++ :: Speed Of Floating Point Multiplication / Division

Jun 2, 2012

I heard that the speed of floating point multiplication is much faster than division. Is it still the case today?

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C++ :: Why Are Arithmetic Operations Like Division And Multiplication Invalid On Pointers

Feb 15, 2013

why are the arithmetic operations like division(p/q) and multiplication(p*q) invalid on pointers?.here p and q both are pointers .

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C++ ::  Visual Studio 2012 - How To Get Remainder From A Very Simple Division

Apr 10, 2013

So I am using Visual Studio 2012 Professional, this is C++ code. I am just trying to get the remainder from a very simple division. Nothing difficult, heres the code:

double getProbability(){
int rd = random();
int max = numeric_limits<int>::max();
double result = rd % max;
cout << "Probability: " << result << "
";
return result;
}

When I look at the values in debug I get:

max 2147483647
rd 1804289383
result 1804289383.0000000

That is completely wrong. The answer should be 0.840188. What is going on here?

random() just returns a number from a vector that was prepopulated with "random" integers. Not really random, but that isn't all that important. What is important is why on earth is a % operation returning such a huge number. I assigned the values to variables so I could look at them in the debugger. I know I am going to probably get a thousand different ways that I could do this "better" but again, that isn't what I am looking for. I would just like to know why the % operation is doing what it is doing?

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C/C++ :: Multiplication And Division Operation Not Allowed With Pointer Arithmetic?

Jul 28, 2013

C++ only allow addition and subtraction operation with pointer .why multiplication and division is not allowed? Then how to perform multiplication and division with pointer

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C++ :: Long Division Output Using Vectors Of Chars Outputs Garbage

Jan 20, 2014

This code works very oddly.

Code:
#include <algorithm>
#include <cstdlib>
#include <iostream>

[Code].....

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C++ :: Program That Inputs A File / Performs Binary Division And Outputs Remainder

Sep 30, 2013

For class I need to write a program that inputs a file (the dividend), performs binary division on the file (using 0x12 as the divisor), and outputs the remainder(checksum).

I have researched binary division algorithms and I get the general gist, but I'm still unsure where to start. How would I store the dividend and divisor? As two arrays of bits?

Then, I need to figure out how to perform shifts and XORs on the the binary numbers. Maybe I should use bitwise operations?

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C++ :: Overloading Modulus Operator To Return Remainder Of Division Between Two Floating Point Numbers

May 27, 2013

Say I wanted to overload the modulus operator to return the remainder of a division between two floating point numbers. Why isn't a custom double operator%(double, double) allowed even though that function isn't available in the standard anyway?

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C++ :: Program That Takes Baseball Players Statistics And Display Averages - Function Division

Oct 10, 2013

I was required to write a program that takes a baseball players statistics and displays there averages. I was required to make 3 function in the file to perform this tasks. my problem I am having a division problem in the SLG function. My compiler does not require the system ("PAUSE"); command.

OUTPUT
The player's batting average is: 0.347
The player's on-base percentage is: 0.375
The player's slugging percentage is:
(test)AB = 101
(test)Tot Base = 58
0.000

Code:
/* Batting Average Program
file: batavg1CPP.cpp
Glossary of abbreviations:
BA = batting average
PA = plate appearances
H = hits
BB = bases on balls (walks)

[Code] ....

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C :: Function To Round A Number To Give Integer Number That Is Closer To Real Value

Oct 9, 2013

I was told to use a round function to round a number to give an integer number that is closer to the real value. (for example if the number is 114.67 I need to print an int value of 115 instead of 114)

I am not exactly sure how a round function works, but I am told to include math.h library. What I try doesn't seem to work.

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C :: Displays Random Symbols As Opposed To 1234

Nov 7, 2014

Code:

#include <stdio.h>#include <string.h>
int main() {
char pin [] = {1,2,3,4};
printf("%s",pin);
getchar();
}

the above code displays random symbols as opposed to 1234

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C :: Fixing Size Of Array As Opposed To Using A Pointer

Oct 15, 2014

If I have an array and all I have is an upper limit on how big the array can get, and if the number of elements that get added can be considerably smaller than this limit, is it always the right choice to declare a pointer and just reallocate extra memory whenever the array grows? For instance, instead of declaring int a[max] I can declare a pointer int *a and than just realloc when I add elements.

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C :: How To Generate Real Number Between 0 And 1

Mar 1, 2015

I am a very very beginner at programming with C. Well, basically i have to generate a real number between 0 and 1 (which as the same as from 0 to 100 k and than dividing everything with 100 k).

Why I am constantly talking about 100 k? Because I would need approx 50 000 random numbers between 0 and 1. My code currently looks something like this:

Code:

int main(int argc, char** argv) { int min,max;
double number;
srand((unsigned)time(NULL));
number = 1 + rand()%100;
printf("The number is: %lf",number);
sleep(2);
return (EXIT_SUCCESS);
}

And If I am not mistaken, should generate numbers between 0 and 100. But I can't figure it out how to change to code in order to get enough numbers.

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C# :: Getting Real Number From A Textbox?

Oct 28, 2014

All I want is to let the user enter a value such as .55 or say, .34 and use that in a calculation.

I cannot get passed the errors.

double theRate;
double totalMileage;
double amountOwed;
private void btnCalculate_Click(object sender, EventArgs e)

[Code] ....

So how do you get numeric input from a user?

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C/C++ :: Check If Quartic Has Real Roots?

Feb 7, 2015

I have been writing code to find the roots of a quartic (with coefficients input by the user) by the Newton Rapson method. The method fails if no real roots exist so I have been trying to implement an initial check to see whether the equation has real roots. I've been trying to use the intermediate value theorem but it only works for functions with a positive and negative tail. extend the bounds (fa and fb) to check over many ranges or any other mathematical method of better effect?

Atm I define fa<0<fb where fa=F(-10) and fb=F(10).

#include <stdio.h>
#include <math.h>
#include <conio.h>
#include <stdlib.h>
int a0, a1, a2, a3, a4;
double F(double x) //Sets main function {
return (a0+a1*x+a2*pow(x, 2)+a3*pow(x, 3)+a4*pow(x, 4));

[code].....

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C/C++ :: How To Take Data From Internet In Real Time

Apr 17, 2015

How i can take data from internet n real time i want make program wich alarm when a specific site(from my university) have a announcement...

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C++ :: Program To Find Smallest Real Factor Of A Number

Oct 10, 2013

I need codes for a program in C or C++ that will show the real factor (the smallest one, without the number 1) when an integer is given as input.

When the program is started, it will ask to enter a number and press enter. After entering a number, it will first check if it is a prime number or not. If prime, it will notice that it is a prime number, otherwise, it will print the smallest real factor of the given integer.

For example, if 12 is entered, it will print, the smallest real factor for this number is: 2

If 27 is entered, it will print, the smallest real factor for this number is: 3

...and so on

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C :: Generate Pseudo Random Real Number From Interval (0,1)

Feb 6, 2013

How can I generate a pseudo-random real number from interval [0,1] ?

Can it be generalized to any interval? Like [0,a], where 'a' is a parameter?

I tried searching for it, I only found rand(), srand(), random(1), and randomize. None of it actually seems to work for me..

Later I actually succeeded with something like

srand( (unsigned)time( NULL ) );
printf( " %6d
", rand() );

but it only produces up to five digits integers and I cannot divide by 99999 to get it into [0,1].

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C++ :: How To Generate Real Random Number From Normal Distribution

Jun 26, 2013

I want to generate random numbers of normal distribution and use scentence like

std::default_random_engine generator;
std::normal_distribution<double> distribution(0,1);
arrayX[i][j]=distribution(generator);

But I find that each time the array I got are the same. So how should I generate random numbers with different seedings with normal distribution?

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C/C++ :: Interactive And Animated Real-time Offline Map Application

Apr 25, 2015

I want to develop a interactive and animated real-time offline map application. For example if user puts mouse on the map, it should the latitude, longitude and name of the location.

There should be animation for example blinking of a location. And it should work offline without internet. I want to use google maps data but I don't know how.

I know following languages:
C/C++ (Advanced level)
PHP (intermediate level)
Java ( beginner level)

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