C++ :: Check If Number Belongs To Particular Base Or Not

May 2, 2013

I am making a number base conversion program in c++, suppose that user enters an base 2 number and want to convert that number in base 4. when he enter the number (which he wants to be converted), how can i detect that number is belongs to base 2 number system or not.

For example: if user enter 1001011001 , program should continue and convert that number to base 4. and if user enter 1200101 or 1001012 , program should not convert that number and output that this number is not belongs to base 2 number system.

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C++ :: Convert Base 10 To Base X Number Within String Of Characters

Apr 15, 2013

How would you convert say "238273615237287352536266362524382737272" base 10 to a base x number contained within a string of characters?

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C :: Base Number Representation

Jul 23, 2014

I am using MCC18 for use with MPLAB.

0bnnnnnnnn means a binary representation.
0x00 means a hex number representation.

What does sd001 means? signed decimal 1? if so how do I represent a -1 using this sdnnnn format?

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C :: How To Convert Number 75 To Base 4 Representation

Mar 6, 2015

How to convert e.g. number 75 to base 4 representation? The result should be 1023. I plan to use uint32_t

x = a3.43 + a2.42 + a1.41 + a0.40 = a3.64 + a2.16 + a1.4 + a0

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C :: Convert Number To Binary From And Base Up To 10

Dec 7, 2014

I had an exercise that required me to convert a number to binary (base 2) which as simple enough.

Code:
#include <iostream>#include <iomanip>
#include <cmath>

using namespace std;
void Conversion (int n);
int main () {

[Code] .....

I now have a follow on exercise that requires me to convert to binary from ant base up to 10, i thought this would just be replacing the 2 with a variable obtained form the user, but i am having problems as within the function i am getting an error that i haven't passed enough arguments and i cant see why i get this. I did the following:

Code:
#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;
float Conversion (int n, int b);

[Code] ....

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C++ :: Enter Decimal Number Into Program And Required Base

Oct 12, 2013

You enter decimal number into the program and what base you want. The integer part of the decimal is being handled fine, but the decimal is not.

For example, I enter 15.6847 and base 10, which means I'm going from base 10 to base 10. It spits out 68469999999999 for the decimal part. (Do not worry about the first block of numbers. The second block seperated from the first by a space is where the decimal will appear in order.)

#include <iostream>
#include <string>
#include <math.h>
using namespace std;
int baseConverter(int, int, int *, int *);

[Code] ....

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C/C++ :: Adding Base-N Through Strings (between Base-2 And Base-36)

Feb 27, 2015

I just wanted to add strings in any base form (example 1101+100 = 10001 in base-2 but it could be added using any base-form like in base-3 to base-36) and I'm having a big trouble with my code because it gave me incorrect results.

addition(char st[], char st2[], int base){
int i, j, carry = 0, ans, len, o=0, z=1, l=0;
char final[50];
if(strlen(st)>=strlen(st2))
len = strlen(st);
else
len = strlen(st2);

[Code] ....

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C :: Converting Decimal Number To Any Base Then Find Ones And Twos Complement

Oct 10, 2014

I have the code working on converting a decimal number to base 1 through 16. I need getting the code to output the one's and two's complement.

Code:
#include <stdio.h>
int main(void) {
char base_digits[16] =
{'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};

int converted_number[64];
long int number_to_convert;
int next_digit, base, index=0, a;

/* get the number and base */

[Code] ....

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C++ :: Negative Number Check

Sep 30, 2013

The code on lines 44-53 is suppose to display a message when the user enter a negative number, however, when a correct positive number is entered the message is display again.

#include<iostream>
#include<cctype>
using namespace std;
int main() {
char carType;
int A, B, C;

[Code] ....

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C++ :: CPP Program To Check Whether A Number Is Palindrome Or Not?

Feb 12, 2014

I could not find the mistake in this program....

Code:
//cpp program to check whether a number is palindrome or not
#include<iostream.h>
#include<conio.h>
//the class
class palindrome

[Code] ....

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C :: Check Number Of Elements In Array

Apr 7, 2014

I can have at most 3 structs in array, but it could be 0,1,2 or 3 structs in array. I am trying to avoid dynamic memory allocation. I initialize sensors to 3 to reserve space for them in memory, since there may be at most 3 elements in the array. But I am testing a condition where there will only be 2 elements:

Code:

#include <stdio.h>#include <stdlib.h>
#include <string.h>
typedef struct {
unsigned long long int address;
float current;
unsigned char pressure_units;
} sensor;

[Code]...

The problem is even though there are only 2 sensors out of 3 in the array, sizeof(sensors)/sizeof(sensors[0]) returns 3. I assume because when it allocates memory for 3, it includes that allocated memory even though it really doesn't contain the struct. How can I figure out how many elements were really inserted into array, not just allocated to array?

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C++ :: Check If A Number Is Odd Or Even And Print It To The Screen

Mar 8, 2013

My objective is to check to see if a number is odd or even and print it to the screen just to make sure its working correctly.

The data file contains:
138
402 2 485
9
43
98 805
58
421
948 7 97
48
67
35
42
948
579 39 12
700 20 500 210
98

I can get the numbers to print fine using:

fstream infile1(argv[1]);
if(!infile1.is_open())
cout << "Could not open file";
else {
char listNum;
while(infile1.get(listNum))
cout << listNum;
}

However, when I check for odd or even numbers it will check each and every number.

printed like this (partial list):
1 is odd 3 is odd 8 is even
9 is odd

But it should print:
138 is even
9 is odd

I tried using getline, but it keeps giving me the errors:
invalid conversion from 'void*' to 'char**'
invalid conversion from 'char' to 'size_t*'
too few arguments to function 'ssize_t getline(char**, size_t*, FILE*)'

Here is the getline code, what am I doing wrong? I have tried switching things around, adding things. Just nothing works.

ifstream infile1(argv[1]);
if(!infile1.is_open())
cout << "Could not open file";
else {
char listNum;
getline(infile1, listNum);
cout << listNum;
}

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C++ :: Choose A Number To Check If Prime Or Not

Oct 20, 2014

#include "stdafx.h"
#include "iostream"
using namespace std;
int main (){
int x;
int i;
int e;

[Code] ....

is the logic good ? and why the program is looping

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C# :: Check Number Enter In Textbox And With DLL

Jul 12, 2014

This program with DLL that check number enter in textbox and use RGB for change color

example: if user enter 000 (000:black) changed color automatic textbox to black, and other 111 ....

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;

[Code]....

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C/C++ :: Check If A Number Has Decimal Place

May 31, 2014

I'm trying to make a program to check if a number has decimal place, for instance: 1.34(yes), 1.0(no), 3.45(yes), 5.0(no).

Code:

#include <stdio.h>
#define LENGTH 4
int main( void ) {
int i;
float a[LENGTH];
for(i=0; i < LENGTH; i++) {
scanf("%f", &a[i]);

[Code] ...

I'm getting this output, why?

Quote

error: invalid operands of types "float" and "int" to binary "operator%"

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C/C++ :: Program To Check Number Is Prime Or Not

Jan 12, 2013

What is the minimum range of numbers which we need to go necessarily to check either a number is prime or not?(for all integers) ....

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C :: Obtain Check Number And Then Company Information From Datafile

May 13, 2013

I have to obtain a check number from a datafile and then also get company information also from a datafile.

So my first question is about the:

Code:
char outputFilename[]= "out.list"

Is this the name of the output file I'm going to write to? And also the file has to be created before being used...is that line of code creating the file or do i have to create it in notepad?

Code:
FILE *ifp, *ofp;
char *mode = "r";
char outputFilename[] = "out.list";
ifp = fopen("in.list", mode);
if (ifp == NULL) {
fprintf(stderr, "Can't open input file in.list!

[Code] .....

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C :: Algorithm To Convert From Any Base To Base 10 Decimal

Mar 25, 2013

I got this algorithm of conversion and now I'm stuck at how to code it.

"Algorithm to Convert From any Base to Base 10 Decimal."

Let 'n' be the number of digits in the number. For example, 104 has 3 digits, so 'n'=3.
Let 'b' be the base of the number. For example, 104 is decimal so 'b' = 10.
Let 's' be a running total, initially 0.

For each digit in the number, working left to right do:

Subtract 1 from 'n'.
Multiply the digit times b^n and add it to 's'.

When done with all the digits in the number, the decimal value should be 's' .

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C :: Need To Convert Base 10 Integer To Base 16

Mar 20, 2014

I need to convert an integer, for example 10, to its base 16 equivalent, 16. I found this code that converts a base 16 number to base 10, but I need the opposite. Plus, this code doesn't seem to work properly with input values under 32.

Code:

uint32_t input = 16;
uint8_t temp;
temp = ((input>>8)*100)|((input>>4)*10)|(input&0x0f);

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C/C++ :: Output Number Of The Day Based On Month Day And Year - Check Leap Year

Feb 14, 2015

Whenever I run the program I get no errors yet it doesn't return a value for total it just exits the program. The program is supposed to output the number of the day based on the month day and year and check whether it is a leap year.

#include <iostream>
using namespace std;
int totaldays();
int days();
int month, day, year;
bool leap();
int main() {
char dash;
cout << "Enter the date in mm-dd-yyyy format to find out what day this is in the year." << endl;

[Code] ....

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C++ :: Converting From Base 10 To Base 4

May 7, 2013

i am converting a base 10 number to base 4.

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C++ :: Converting Base N To Base M

Feb 8, 2013

I was wondering if there is a standard for converting something like this:

HELLO 27 to ?3

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C++ :: Base Class As Parameter

Oct 14, 2014

I have run into a problem which is mostly just an annoyance. I need to know if i can have pass a derived class to a function which has the base class as its parameter. For example i have been creating a program but i have a function which needs to work for multiple classes all derived from the BaseObject class

Code :

class folder : public BaseObject
{}
class BaseObject
{void function(BaseObject B)}

how would i get the following to work:

function(folder)

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C++ :: Convert Big Numbers To Other Base 64

Oct 2, 2014

I'm working on a program and I need to convert big numbers to radix 64. I would like to shorter them whit conversion that's why I choosed base 64. I have two problems:

1. The conversion works only for not so big numbers. Untill about 2^32. I would like to convert bigger numbers. Is there any solution? (I thought on GMP/MPIR library, but I can't managed it.)

2. The conversion back to decimal base doesn't works, because I use 'strtoul()' which doesn't support bigger bases like 36.

Is there any good method for that?

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C++ :: A Pointer To Base Class

May 18, 2013

A pointer to base class, if assigned to a derived class, only points to the base part right? So you can only use the base part of the derived class with that pointer and no methods from the derived class?

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C++ ::  Inheritance Using Base Method With Other Name?

Feb 18, 2015

I have 2 classes with a Function with the same definition (both inherited from the same base class) and in my derived class I derive from both of those 2. Is it possible to use the Methods of both classes? for example with an other name?

class A {
protected:
int print(int a) { std::cout << "int A: " << a << std::endl; }
};
class B : A

[Code] ....

is there something like using C::print as printc;?

The Problem, I have a Sprite class that derives from a Rectangle with properties Position, Size, Origin and Angle and a Text class that derives from Rectangle. Now i have a Button class deriving from both Sprite and Text.

- The Position, when moving the Button i have to change the position of both so i Implemented a new Method which calls SetPosition from the Sprite and the Text.
- The SetSize just affects the Button so i just did using Sprite::SetSize;
- The angle affects both so i just implemented a new Method and hide the other two

The problem is here:
- The Origin: writing button.SetOrigin(-1,0) should set the Origin of the Button and writing button.SetTextOrigin should set the Origin of the text.

Should i just reimplement a Mehtod named SetTextOrigin and call Text::SetOrigin from there and hide the button.Text::SetOrigin or is there something like using Text::SetOrigin as SetTextOrigin?

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