C++ :: Convert String To Char

Apr 30, 2013

Is there anyway to convert std::string to char*?

Like:

std::string x="hello world";
char* y=x;

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C++ :: Convert String Of Hex To Char

Jul 5, 2013

I have this code working:

char tmp_wku[3];
tmp_wku[0]=0x01;
tmp_wku[1]=0x9D;
tmp_wku[2]=0x62;
char tmp_com[11];

[Code] ....

This sends the buffer to a LIN modem. My question is: can this be done better. If I have a astring of hex numbers like "09 98 88 55 42 FF 00 00 FF BD 89". How could I send this without manually makng a char with hex numbers?

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C :: Convert Char Array To String

Oct 15, 2013

Currently I have:

Code:
char my_array[4] = { '1', '2', '3', '4' };

how do I convert the above to a string of: "1234"

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C :: How To Convert A String Into 2D Char Array

Mar 8, 2013

.I have this string that I need to convert into a 2d char array like this:

String str= "A,E,B,I,M,Y#N,R,C,A,T,S";

I know how to use delimiter and split string and I know how to convert but only from string to char[].I need something like this:

Input: String str= "A,E,B,I,M,Y#N,R,C,A,T,S";

Output: [A] [E] [B] [I] [M] [Y][N] [R] [C] [A] [T] [S]

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C++ :: How To Convert Unsigned Char To String

Oct 4, 2014

How do I convert a variable of type unsigned char to string.

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C/C++ :: Convert String To A Char Array?

Apr 29, 2015

How do I convert a string of unknown length to a char array? I am reading strings from a file and checking if the string is a Palindrome or not. I think my palindrome function is correct, but do I do something like char [] array = string.length(); ??

#include <iostream>
#include <fstream>
#include <string>
#include <cctype>

[Code].....

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C/C++ :: Convert Char Variables To String?

Apr 17, 2013

I need to find some sort of method to convert a series of char variables to a string, to be shown in a label. I've searched for two days and experimented myself just as long, and the closest I've gotten simply puts ASCII values into the string with the following command:

label1 -> Text = System::Convert::ToString(fdp8), System::Convert::ToString(fdp7), 
System::Convert::ToString(fdp6), System::Convert::ToString(fdp5), 
System::Convert::ToString(fdp4), System::Convert::ToString(fdp3), 
System::Convert::ToString(fdp2), System::Convert::ToString(fdp1);

fdp1-fdp8 are all char variables.

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C++ :: How To Convert Char To String Or Vice Versa

May 26, 2013

how to convert char to string or vice versa,, Also make a program in which we convert a char into string ?

Conversion Char array to String

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C++ :: Read Byte Of Char Data And Convert It Into Text String Of Binary Data That Represents Hex Value

Dec 26, 2013

I am writing a program where I need to read a byte of char data and convert it into a text string of binary data that represents the hex value...

i.e. The char byte is 0x42 so I need a string that has 01000010 in it. I've written the following subroutine....

------------- My Subroutine ----------------------------------------------------------------------
void charbytetostring(char input, char *output){
int i, remainder;
char BASE=0x2;
int DIGITS=8;
char digitsArray[3] = "01";

[Code] ....

When I submitted the byte 0x42 to the subroutine, the subroutine returned to the output variable 01000010... Life is good.

The next byte that came in was 0x91. When I submit this to the subroutine I get garbage out.

I am using a debugger and stepped through the subroutine a line at a time. When I feed it 0x42 I get what I expect for all variables at all points in the execution.

When I submit 0x91 When the line remainder = input % BASE; gets executed the remainder variable gets set to 0xFFFF (I expected 1). Also, when the next line gets executed..

input = input / BASE; I get C9 where I expected to get 48.

My question is, are there data limits on what can be used with the mod (%) operator? Or am I doing something more fundamentally incorrect?

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C++ :: How To Convert Char To Const Char

Jun 3, 2013

I have a file which contains a year and the name of an associated file to be read. I need to extract the data in the txt file and perform some calculations.

( year data file)
2004 2004data.txt
2005 2005data.txt
2006 2006data.txt

Here is what I do. I first declare "char yeardata" and then pass "2004data.txt" to it. Then I call yeardata in ifstream to extract the data inside the file "2004data.txt". The problem is that char yeardata is not constant so I cannot pass the file to it. It doesn't work if I change "char yeardata" to "const char yeardata".

Code:
int oldnewcomp_temp(char* lcfile) {
using namespace std;

int year;
char yeardata;

[Code] ....

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C++ :: Can't Convert Char To Int

Nov 9, 2013

I am writing a basic keylogger and i want to add data to log file, but it says that i cant convert char to int. Everything else works fine.

Code:
#include <iostream>#include <windows.h>
#include <stdio.h>
#include <time.h>
using namespace std;

[Code] ....

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C :: How To Convert Char To Int

Nov 24, 2014

Example

char A[4]
gets(A) --> 1234

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C++ :: How To Convert Int To Char

Jan 24, 2015

if we have int x = 5; and we want to convert x which is == 5 to char so for example char number = x doesnot work i understand why , but how to convert it ?

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C++ :: How To Convert A Char To CString

Aug 27, 2013

I am trying to convert a char to a CString, I have tried to use the CString.Format method but didn't work. I have a char(char holder[10]) and I want to see if holder is a certain string, say for instance SeaLevel. Below is the code that I also tried.

if(holder == "SeaLevel")
{
//do something
}

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C++ :: How To Convert Char Into Numeric Value

Jan 1, 2015

when I was looking for a way how to convert char into numeric value for std::cout I found some old discussion with this statement: Operations on unsigned int are typically faster than on unsigned char, because your processor cannot fetch single bytes but has to get at least a multiple of 4 and mask out the other 3 bytes. Is this true? By using smaller (in bytes) variable I actually slow down my program? I always thought that it is a good practice if I use the smallest variable which will do the work. Is it also dependent on a compiler and OS?

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C++ :: Convert Char To Time?

Aug 2, 2013

I am trying to convert char to time and I found the following code. But it gives me a -1 on "converted" instead of time.

#include <stdio.h>
#include <time.h>
#include <iostream>
using namespace std;

[Code].....

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C# :: Possible To Convert Char Into Numeric Value

Feb 22, 2014

I want to avoid converting the char[] into a string as an intermediate step, since I'm trying to write some "string" parser helpers which don't allocate a bunch of different strings onto the heap. (whole point of this little project is to reduce GC pressure in applications that do alot of string parsing).

basically if I have a char[] that contains {'1','2','3'}, I'd want to to be converted into 123.

I tried messing around with the stackalloc operator in C#, but its illegal to stackalloc a string unfortunately. I also googled around for converting a char[] into a numeric value, but all the solutions convert each individual char into their ASCII code, or convert the char[] into a string as an intermediate step.

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C++ :: Cannot Convert From Char To FARPROC

Feb 20, 2015

I am trying to compile the following C code in C++ with visual studio 2010:

Code:
#include <windows.h>
#include <stdio.h>
void test(FARPROC addr) {
__try {
addr();
printf("ok

[Code] ....

But I get the compilation error: main.cpp(25): error C2440: 'type cast' : cannot convert from 'char [4096]' to 'FARPROC'

How would I make this compile in C++?

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C++ :: Convert Int To Char Array

Jun 7, 2012

I want to convert int to char array for get the total of digits like this..

Code:

int total;
char charnum[2] = (char)total; //this is the problem
int num = 0;
for (int i = 0; i <2; i++)
{ num += charNum[i] -48;}
cout << num;

If total was 42 i want to get output as 6. for this purpose i want to convert int to char.

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C :: Convert A Long Int Into Char Array?

Feb 21, 2013

Without lossing information?

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C :: Convert Char Array To Double

Mar 6, 2015

How to convert char array into double?,i.e. store char array values into a single double variable. Below is the code that i'm working. Im extracting the value "2255.1682" from char array gpsdata1. I used while loop, extracted the value and stored in "myChar", but i want to store it in double variable "lat1".

Code:
#include <stdio.h>
#include <stdlib.h>
int main(){
unsigned char gpsdata1[]="$GPGGA,091310.000,2255.1682,N,11356.3605,E,1,4,1.62,164";
char myChar;
double lat1;

[Code] .....

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C++ :: How To Convert Numbers From Char Array

Jan 27, 2015

i want to convert in loop for example this

char number[]="54465465445646848640";

and in loop convert these element to int one by one.

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C++ :: Convert Int Type To Constant Char

Jun 17, 2014

How can you convert int type to const char*

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C++ :: Convert Int To Const Char (for A File Name)

Jan 20, 2014

i found a lot about how to convert int to const char * but non of them explain correctly or sometimes dont even work.

Here is my code:

#include <stdio.h>
#include <cstdlib>
using namespace std;
int main () {
int i =0;
char c1 =0;
char c2 =0;

[code]....

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C/C++ :: EEPROM Stores In Int To Char Convert

Jun 25, 2014

I am using eeprom my integer data store in that int =1234 it stores ony character in eeprom. one character is 12 and other one is 34

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C++ :: Program To Convert Int To Char Array Without Symbol

Apr 17, 2014

I'm writting program and need to convert int ot char array without simbol. I have tryed snprintf , but his returns array full of simbols if it is initilized elsware return full of garbidge. Is there any elegent way to aceave this? What I'm trying to aceave is liek this:

char buffer[10];
int temp = 1231423;
// Do conversation...
// After conversation char array should look like this
// 1 2 3 1 4 2 3 _ _ _
// without simbol

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