If i m writing a code for a program to solve factorials, what is the best approach if i have large numbers in mind?
If i use int, i can only go upto 4bytes and if i use double i can go upto 8bytes. so should i create new type or is there any other way to get this done.
How to get large fatorials in c++...in c++ i am getting the ouput upto maximum of 20!
View 4 Replies View RelatedWhy this class doesn't work for Subtraction, Division and Square Root. When I try to get results for Subtraction, it output right answer, but with any trash. And When I try to get answer for Division and Square Root, it just brakes and don't output anything. For Addition and Multiplication class work correctly.
Its the link to this class [URL]
I'm programming an app that deals with large numbers. I have a do-while loop that I want to execute. I can not get it to work. The "while(d!=1)" part is the problem and I can not find a way around.
Code:
#include "stdafx.h"
#include <stdio.h>
#include <gmp.h>
#pragma comment(lib, "gmp.lib")
int main (int argc, char *argv[]) {
mpz_t d;
[Code] ....
I get errors:
1.error C2446: '!=' : no conversion from 'const int' to '__mpz_struct *'
Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
2. '!=' : '__mpz_struct [1]' differs in levels of indirection from 'const int'
I am working on a program which creates a large pointer array of numbers and then performs several iterations of operations in them.
Code:
int * u = new int[N];
double * nu = new double[N];
int * nud = new int[N];
for (int i=0;i<M;i++){
for (int i=0;i<N;i++){
u[i]=0;
nu[i]=0;
[Code]...
If M is small enough then there are no problems in the program. However once M is large enough I get the "unhanded exception":
std::bad_alloc at memory location 0x0026f728..
Since I am just reusing the same arrays, and since I am able to make it through a few iterations, I didn't think it could be a memory issue. If it is, is there a way I can clear the data completely after each iteration?
I have to make a function that can add two numbers of any size. So far I have:
#include <iostream>
#include <string>
struct number {
[Code]....
why I'm getting a segmentation fault? It's really dense because of all the conversions I had to do.
I have designed a code and still i dont get the desired output ....
#include <iostream>
using namespace std;
int fact(int,int);
int arr[200]={1};
int main() {
int n,t,len=0,i=0,j,a;
cin>>t;
[Code] ....
My code handles smaller numbers well enough, but I need the program to be able at least factor 100!.
#include <stdio.h>
void factorialOutput(unsigned int &n, int fac[]);
unsigned long long factorial(int n);
int main(int argc, const char * argv[]) {
unsigned int t = 0;
int n[101];
[Code] ......
I have a very large number in word ~6million digits long
I wish to make a program to check if it is prime.
Exmaple:
112121276783621784678236478236478623784672364782367846237846782364782367846238 + 783627846782364786237846782364782367846237846782364782367846237846237864782367846238
It should be efficient and fast. It is useful to calculate the Factorial 100000, and then I calculate the number of the module.
Example:
132142344564378657834657834657863785634786578346578346785634785678653478 % 124623874
I have to write a program, that multplicates very large numbers (out of range of long int). It's said that i need to use arrays and read the numbers as strings. My problem is to end function called "mnoz:, because i don't know how to sum the multiplicated values of arrays a and b.
Code:
#include<stdio.h>
#include<math.h>
#include<stdlib.h>
#include "winbgi2.h"
#include<string.h>
#define roz 10000
char lan(char a[])
[Code] ......
I tried to sort a large numbers of vector of random integers with std::sort(), but when the number increases over 10M, std::sort returns all zero in values. Does std::sort have a limitation of input numbers?
View 1 Replies View RelatedWhat I'm trying to do is make a calculator that takes two large numbers in a linked list then ask the user if they wish to add them or subtract them.
#include<iostream>
#include<string>
using namespace std;
class Node {
public:
int value;
Node * next;
[Code] ....
I'm having problems with progress bar when using a big number in set range. For numbers below 50000 it works very well but for big numbers like 100.000 it doesn't work, it makes 2-3 rounds of animation
Code:
int number= 50000; // 50k works well but if i put 100k it won't work (it will animate 2-3 rounds instead of complete one)
progressbar1.SetRange(0, number);
progressbar1.SetStep(1);
for (int i = 0; i < number; ++i) {
listcontrol1.InsertItem(i, _T("whatever"));
progressbar1.StepIt();
}
What's wrong with the code ?
I'm working on an anagram solver, and started with words 3 characters big. But it can solve some words and not others.
std::string str = "enp";
std::string match = "";
int chk = 0;
[Code].....
With the string "enp", it knows it matches "pen". But if I use "mum", it doesn't match it with "mum".
Is there something flawed with my algroithm?
I am trying to write a code that solves a system of linear equations such as A*B=C. My system has a dimension equal to 1600. The matrix A cab be separated into 4 sub matrices and each can be handled by a different thread. I tried to solve this using the following code:
int main() {
int count = 0;
//Inputing matrix A
ifstream matrix;
matrix.open("example.txt");
[Code] ....
Although the above code gives the correct answer, the time needs to find the solution is bigger than that needed without using threads.
I am writing a program to solve a triangle. Given any three pieces of information, find the other three. I am having trouble with SSA. I use the cosine law to find the unknown side. Then I use the sine law to find the other two angles. The sine law will give me each of the other angles. If one of the unknown angles is over 90 degrees, my program gives an angle as under 90 degrees. Not surprisingly, the correct angle and my wrong angle add up to 180 degrees. If you draw out the triangle you can deduce the right answer. How to have my program find out when the angle needs to be over 90 degrees.
View 5 Replies View RelatedThis is a function that calculates factorials of the user input.I'm not getting a favorable printf result.
Code:
void calcFactorial ()
{
int arr [100];
int num = 0;
int i;
int factorials = 0;
int product = 1;
}
[code].....
I am trying to get this statistical equation to work. m! / n! (m-n)!.
Code:
#include <stdio.h>
long factorial_M(long); // function prototype //
long factorial_N(long);
long total (long);
int main(int argc, const char * argv[]) {
[Code] .....
How do function count factorials in this program?
#include<iostream>
#include<conio.h>
using namespace std;
void main(){
unsigned int factorial(unsigned int value);
[Code] .....
Opening large files in c++. In my application, i am trying to save video as long as users have space in harddisk. What I am trying to do is when user is recording video i am trying to append the video data in to the file. The problem is that every time file size reach over 2GB my software crashes.
View 5 Replies View Relatedignoring negative numbers when I am trying to add up only positive numbers.
SAMPLE:
if (num>=0) {
sum= sum + num;
}
else
how would the else in this case being a negative number not be included in the sum
I wrote an code for generating an aoutpu of random numbers, but it doesn't gives me back the numbers here is the code:
#include <iostream>
#include <time.h>
#include <cstdlib>
#include <stdio.h>
#include <iomanip>
#include <cmath>
using namespace std;
const int ANZ = 6;
[Code] .....
I cant find the mistake.
I need to fill two 2D arrays, the first one with even numbers from 1 to 50, the second one with odd numbers from 1 to 50.
Code:
#include <iostream>
#include <ctime>
#include <iomanip>
using namespace std;
int main() {
srand(time(NULL));
[Code] ....
I am currently working on a student records program and I want it to print a '-' after every 3 digits from the Id number that I read from the file(ID number from file doesn't have the dashes). How would I do that to print it with dashes?
Here are my reading functions.
Code:
void Read_Student(Student & Temp , ifstream & fin){
fin >> Temp.FirstName;
fin >> Temp.LastName;
fin >> Temp.Id;
fin >> Temp.Quiz;
for (int i = 0 ; i < 6 ; i++)
fin >> Temp.Test[i];
[Code] ....
Intro To Computer Science C++
SAL 343
JHG 344
John Adams
111223333 100 87 93 90 90 89 91
Willy Smith
222114444 90 73 67 -77 70 80 90
Phil Jordan
777886666 100 80 70 -50 60 90 100
One more thing, I also am having problems with reading last name. If I edited the inout file and had for example John Adams Jr. it would cause huge print problems. When I remove it it prints out perfectly.
In C++, the largest int value is 2147483647. So, an integer larger than this cannot be stored and processed as an integer. Similarly, if the sum or product of two positive integers is greater than 2147483647, the result will be incorrect. One way to store and manipulate large integers is to store each individual digit of the number in an array. Write a program that inputs two positive integers of, at most, 20 digits and outputs the sum of the numbers. If the sum of the numbers has more than 20 digits, output the sum with an appropriate message. Your program must, at least, contain a function to read and store a number into an array and another function to output the sum of the numbers. (Hint: Read numbers as strings and store the digits of the number in the reverse order.)
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