C/C++ :: Convert Integer To Its 2 Complement

Feb 12, 2014

I have to implant a code to convert any integer to its 2'complement. I have already finished the first and the second part, which was to convert the integer to its binary representation, then to invert each digit in the binary representation. The third part is to add 1 to the binary representation.

// the last step is to add 1 to the binary number
int carryIn=0;
int carryOut;
for(itr= bainaryList.begin(); itr!= bainaryList.end(); itr++) {
//start comparing the possibilities of the values in both lists
if (((*itr)==0) && (carryIn== 0))

[Code] ....

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C/C++ :: Converting Integer Number To Its 2's Complement Presentation

Jan 28, 2014

I am working on an assignment about converting an integer number to its 2's complement presentation. The binary representation is consisting of a single linked list.

As we all know, the steps of this converting is to taking the reminder of the absolute value, then flipping the 1 to be 0, and the 0 to be 1 in the binary number. And the last step will be to add 1 to the binary number invers.

I wrote a code that implements every thin correctly. However, when I reached the part of adding 1, the program was hanged.

int Absolute; //the first step is to convert the number to the binry reprezentation
Absolute = abs (value);// by take the Absolute value of the negative number, then find the
while (Absolute !=0) //the binary reprezentation {
int res;
res= (Absolute % 2);
pushFront (res);
Absolute /=2 ;

[Code] .....

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C++ :: Convert Int Array To Integer

Nov 23, 2013

Is there anyway we can make an integer array to an integer...

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C/C++ :: Convert String To Integer (hh/mm/ss)

Jul 9, 2014

I need to convert below value char *time="00.00.05".

I need to convert this to hh/mm/ss ....

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C++ :: How To Convert Character To Integer

Mar 15, 2012

This is my c++ code...the problem is the RESULT is not coming and a bigger number is outputting...I dont know how to convert character to integer..

Code:
#include <iostream>
#include <math.h>
#include <stdlib.h>
using namespace std;
const int size = 50;
char infix[size],postfix[size],stack[size],dummy='?';
int top=-1;

[Code]....

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C :: How To Convert Part Of String And Integer

Jan 2, 2014

I'm having a problem converting part of a string to an integer.I used strtok to seperate my string and I have also a function for atoi but how to apply it to my strtok function.What i need is to change the char *years to an int.Have a look of what I got:

Code:
int main() {
char sentence[]="trade_#_2009_#_invest_#_DEALING";
char *word=strtok(sentence, "_#_");
char *year=strtok(NULL, "_#_");; // assigning NULL for previousely where it left off
char *definition=strtok(NULL,"_#_");
char *synonyms=strtok(NULL,"_#_");

[code]...

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C++ :: Convert From Integer To Character String

Oct 2, 2013

I have been trying to write a function which can convert a number from an unsigned long integer to a readable ASCII character string. this is what I have come up with, but I am receiving some very strange characters in return. Could the problem be that I am telling a char to = an unsigned long int, (cString[i] = product[i])?

void convertToString(unsigned long con) {
unsigned long product[10];
char cString[10];
const unsigned long begConvert = 10 ^ 10;

[Code] ....

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Visual C++ :: Convert MM/DD/YY Hh:mm Stream To Integer?

Nov 7, 2012

I'm trying to read in two instances of date and time (from user input) into a string value (MM/DD/YY hh:mm).
I need to be able to calculate the difference between the two in order to return how much time has elapsed from the first date/time to the second date/time.

What would be the most efficient way to go about obtaining said results?

I was thinking I need to convert each year, month, day, hour, and minutes into its own integer variable, after researching immensely online I'm still not sure how to convert from a string of characters to an integer.

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C :: Convert String Made Of Many Numbers To Integer

Jan 6, 2015

I am supposed to convert a string made of many numbers between every number spaces are between, to an integer variable for every number..

How am I supposed to get over this problem?

Example: String: " 322 52 231"

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C :: Convert Elements Of String Array To Integer

Feb 4, 2014

I'm just learning and C. Here is a code snippit from a program that will compile. It's function is to validate credit card numbers. I have an error I can't find though. the last print statement shows the conversion in reverse string (as integers). Here is the code:

int main (void)
{
char cn[17];
char *cardtype;
int n0,n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,n13,n14, n15;
int s1,s2,s3,s4,s5,s6,s7,s8;
int oddsum;
int sum;
int total;
int validate;
}

[code]....

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C++ :: Convert String Which Represents Date To Integer?

Nov 13, 2014

I would like to know how I can convert a string which represents a date to an integer.

#include <iostream>
using namespace std;
#include <string>
int main(){
string actual_date("18/10/2000");
int date = ????????

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C++ :: Convert Integer To String And Populate Array?

Sep 4, 2013

// prompts the user for a non-negative numbers (>= 0)
// reads in the a number and checks
// keeps re-prompting user if the input is invalid (negative)

[Code].....

How do I go about Populating the elements in the array created, I keep getting a compiler error on this vArr[i] = tmp_stream.str.at(i);

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C :: Negative Numbers Are Biased In Two Complement?

Mar 2, 2014

I am reading one of the exercise solutions for C Programming Language: The C Programming Language Exercise 3-4

In it, it states that negative numbers are biased by (2^n - 1) (i.e. -I is represented by (2^n - 1) - (+I). So:

Code:
Bias = 2^8 - 1 = 255 = 11111111
Subtract 25 = 00011001
Equals = 11100110

what is meant by the "bias" here and what is the value of "I" here. It just suddenly uses "I" without explaining what it is.

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C :: Largest Negative Number In 2 Complement

Mar 3, 2014

In this exercise:The C Programming Language Exercise 3-4..It states the following: "In a two's complement number representation, our version of itoa does not handle the largest negative number, that is, the value of n equal to -(2 to the power (wordsize - 1)) ."

A char is one byte (255 bits). The range of an 8 bit variable using a two's complement representation is -128 to 127. Therefore -128 is the largest negative value. The statement in book suggests that the itoa function will not output -128 if we pass -128 as a parameter, because in itoa when we try to convert -128 to positive -128, the inverse of -128 is -128. However, I just ran this code in my computer and it successfully outputted -128.

Code:

#include <stdio.h>
#include <string.h>
#define SIZE 10
void reverse(char s[])
{
int c, i, j;
}

[code].....

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C++ :: Not Able To Read Data From Text File And Convert It To Integer

Mar 25, 2013

I am trying to read an array values from Tmin.txt file. I take array size from user viz. number of raw & column and then, read the following data from Tmin.txt file which look like this:

20 40 20 25 30

20 30 40 20 25

20 40 20 25 30

20 30 40 20 25

30 40 40 30 40

I am using getline, and then converting it to int by using atoi. But my code is not working.

Code :
// reading a text file
#include <iostream>
#include <fstream>
#include <string>
using namespace std;

[Code] ....

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C++ :: Convert Positive Integer Into Its English Name Equivalent To Digit?

Jul 13, 2014

convert a positive integer code into its english name equivalent for digit. A valid code is of size between four (4) to six (6) digits inclusive. A zero is not allowed in the code.

example : if the input is 234056 the output is : INVALID CODE (PRESENCE OF ZERO)
if the input is 23456 the output is : TWO THREE FOUR FIVE SIX
if the input is 9349 the output is : NINE THREE FOUR NINE
if the input is 245 the output is : INVALID CODE (3 DIGITS)
if the input is 2344567 the output is : INVALID CODE (7 DIGITS)

step 1 : input code
step 2 : count the number of digits in the code
step 3 : if there is a zero in the code, "INVALID CODE (PRESENCE OF ZERO)" go to step 4
step 4 : if number of digits is mode or equal than 4 and less or equal than 6, go to step 5 else display the following message "INVALID CODE (<number of digits> DIGITS)
step 5 : call a function called digit_name to convert each digit into its
equivalent english name. display the result
step 6 : print the digits in reverse order
eg; if input is 13453, reverse order is 35431

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C Sharp :: How To Convert Date In Integer Format To DateTime

Jun 8, 2013

How do I convert date in integer format to DateTime without using DateTime?

I have tried:

Regex regex = new Regex(@"^(0[1-9]|1[012])(0[0-9]|1[0-9]|2[0-9]|3[01])(1[789]|[2-9][0-9])dd+$");
if (regex.IsMatch(txt_fromdate.Text) == true)
            {
                DateTime dt = DateTime.ParseExact(txt_fromdate.Text, "MMddyyyy", null);
            }

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C :: Accept Input Number From User And To Convert It Into Array Of Integer

Oct 7, 2014

i was trying to solve a problem in SPOJ and what i wanted to do is to accept an input number from the user and to convert it into a array of integer.

Code:

#include<stdio.h>
int * toarray(int *num);
int main(void)
{
int testCases;
}

[code]....

But whenever i try to print the array in the main function i get only two value and the rest address

Code:

1//number of testCases
23456 //input number
6
2293452
4
2293700
1974439125

Process returned 0 (0x0) execution time : 4.152 s
Press any key to continue. However, if i tried to print the array from within the function, it prints the numbers just fine.

print the array elements from the main program, so that i would be able to go on with the rest of it

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C++ :: Convert String Variable For The Year To Integer Data Type

May 12, 2014

My intent was to convert the string variable for the year to an integer data type. The code compiles but now cannot run on my system. I'm not sure what's going as to what the program is displaying.

Objective: Prompt the user for two years. Print all Comedy movies that were released between those two years.

#include <iostream>
#include <cstdlib>
#include <string>
#include <fstream>
#include <cctype>
using namespace std;
struct Movie {
string name;

[Code] .....

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C++ :: How To Convert Large Valuge Form Single Integer To Array

Jun 3, 2013

i have mathematic operation and the result is near 70 digits....single variable cannot hold it....

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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 :: 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 :: Assign Integer Value To Unsigned Char Array But It Is Not Storing Integer Values

Oct 25, 2013

I am trying to assign the integer value to unsigned char array. But it is not storing the integer values. It prints the ascii values. Here the code snippet

Code: uchar uc[100];
for(i=0;i<100;i++)
{
uc[i] = i;
}

The values which are stored in uc[] is ascii values.I need the integer values to be stored in uc[]. I tried to do it with sprintf. but the output is not as expected. if I print the uc[i] it should diplay the value as 0,1,2....99.

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C++ :: Changing Integer Into New Integer With Simple Mathematical Operations?

Jun 15, 2014

changing a 9 digit integer into a new 9 digit integer through simple mathematical operations. For example, I need to change 123456789 into the new digit 456123789. Sometimes I need to change a 9 digit integer into an 8 digit integer. An example is 789062456 into 62789456. I can ONLY use simple mathematical operations (addition, subtraction, multiplication, division and modulo).

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C/C++ :: Converting 8-byte Integer To String Based Integer

Oct 15, 2014

Complete the function myitohex so that its converts 8-byte integer to string based hexadecimals.

Ex: printf("0x%s",myitohex(64,hex)); should printout "0x40" on the screen
char *myitohex(uint8_t i, char *result){
???
return result;
}

I wrote:

#include <stdio.h>
#include <stdint.h>
char *myitohex(uint8_t i, char *result){
*result = i + '0';

[Code] ....

0xp gets printed out which is wrong. I think *result = i + '0'; is wrong. What changes should i do on this row ?

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C++ :: Class Template Convert Which Can Convert Itself To Any Data Type

Sep 23, 2012

Code:
template<class T>
class Convert {
T data;
public:
Convert(const T& tData = T()) : data(tData)

[Code] ....

Why do we use operator? Is float and double function names below?

Code:
Convert<int>::operator<float> float();
Convert<int>::operator<double> double();

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