C++ :: Converting Enum To String And Vice Versa?
Feb 25, 2014
It is working:
#include <iostream>
#include <string>
#include <vector>
#include <map>
const int ENUM_NOT_FOUND = -1; const std::string NEW = " ";
enum Day {Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday};
[code]....
Ouput with GCC 4.8.1:
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Name a day: Friday
day = Friday
But the problem is that whenever I define a new enum, I have to define the << and >> overloads for the new enum again. Isn't there a way to template that as well, so that the << and >> overload needs to be defined just once? My atttempt:
template<typename Enum>
std::ostream& operator << (std::ostream& os, Enum en) {
return os << EnumConversions<Enum>::toString (en);
[Code] .....
fails to compile. I guess the problem is Enum is not known at compile time, even though it should be deducible during run time? Error mentions ambiguous overload for operator>>.
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Aug 1, 2014
I'm working on a Fraction Class assignment where I'm supposed to provide conversion operators to allow Fraction objects to be used in expressions containing float data values. The way I have it now, I'm getting an error that says operator float(const Fraction &) must contain 'void', which makes no sense to me. Lines 155 - 173.
// Fractions CLASS
// Source: Fraction2012.cpp
// Author: Warren H. Knox, Jr.
// Date: 11/8/2012
#include <iostream>
#include <cstdlib>
using namespace std;
class Fraction {
[Code] ....
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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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May 30, 2013
I need to convert a tsructure name into a string and vice versa. I don't really know how to do that in c.
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Nov 13, 2013
I was looking for a C++ library for use as stated in the title. I was considering using Voce; however, for the project, I wanted to be able to use a custom voice. For example, in most TTS programs you can pick voices. I wanted to record a custom one. However, I don't really know how these libraries work internally, and since the text to speech is referred to as synthesis, it seems they are created through algorithms rather than recordings. Is there any library which I could use a custom recorded voice with?
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Feb 23, 2013
I have two form in my project 1st form is FORM1 and 2nd form is FORM2.
FORM1 contain 3 textbox,1 button and FORM2 also contain 3 textbox, 1 button. I want to do....
when user fill FORM1 textboex and click button1 then all entries should be shown on FORM2. and vice versa. I used this code its working very good. when i pass value in form2 textboxes its show on form1 textbox. but i want to do, if textbox of form1 is already fill then form2 textboex should also shws form1 textbox value.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace punchout {
public partial class Form1 : Form
[code]......
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Dec 25, 2013
The problem is that I want to write a C++ program that converts an ordinary text file into binary and then reads that binary file and converts it to text file so that this text file equals to first text file. I have wrote this code for it.
int main() {
string name1 = "first", name2 = "sec", name3 = "third";
int j = 0, k = 0;
ifstream ifs(name1.c_str()); // Here I want to read from the ordinary text file (name1).
[Code] .....
Now what the ofs.write(as_bytes(j), sizeof(int)); or ifs.read(as_bytes(k), sizeof(int)); exactly mean?
In practice, the file name1 contains digit 5 and its size is 1 byte. The name2 contains some character/sign like [] and its size is 4 bytes and name3 contains digit 0 and its size is 1 byte, why? I before have created the name1 file in ordinary text file mode.
My machine is Windows 7 32-bit. My compiler is MVS 2012.
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Dec 23, 2013
How to convert an ordinary text file into binary and how to convert that binary file back to a text file so that the first text file equals with the last text file?
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Nov 28, 2012
I transferred data from parent to child. Problem occurred while send data from child to parent dialog.
Find the attachment....
void CChildDlg::OnBnClickedCancel() {
child1ctrl.GetWindowText(parObj.parentval);
::AfxMessageBox(parObj.parentval);
//parObj.parentctrl.SetWindowText(child1val);
[Code] ....
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Mar 13, 2013
Is there any standard USB protocol which i can follow to send data to my embedded board(and vice versa). I have no clue on USB programming using c,is there any example code i could follow,
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May 7, 2013
Is there a quick way to determine if a value is in an enum? Consider for example,
public enum GenderEnum
{
Unknown = 0,
[Code].....
I don't want to convert to an array if possible, just check the enum and get a yes/no answer.
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Jan 25, 2015
I want to convert an enum to a text string.
enum BREED {YORKIE,CAIRN,DANDIE,SHETLAND,DOBERMAN,LAB};
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Apr 2, 2012
Any way to use a string to access a specific item in a matrix of int[X].
I have a program which uses enums as iterators to reference a large amount of data. To select an item in the matrix, the user will enter a string, which is also an enum, which also must serve as an iterator for something in the matrix. Here is a toybox example:
#include <iostream>
#include <string>
using namespace std;
enum NyNumbers { First, Second, Third, Forth, LAST_VALUE };
int main(int argc, char* argv[]) {
int Matrix[LAST_VALUE] = { 1, 3, 7, 12 };
[Code] .....
The idea is the user executes the program by typing "./RUN First" to print out the first element in the MyNumbers array, "./RUN Second" to access the second, and so on. I can't use static numbers for the iterator. (i.e., "./RUN 1") I must reference by enum/string.
When run, the output of this problem is thus:
====================================================================
user@debian$ ./RUN Second
Matrix[ atoi(Second) ]: 1
user@debian$
====================================================================
BTW, if I change line 12 to this
====================================================================
cout<<Matrix[ argv[1] ]<<"
";
====================================================================
The error message is this
====================================================================
user@debian$ make
g++ -g -Wall -ansi -pg -D_DEBUG_ Main.cpp -o exe
Main.cpp: In function `int main(int, char**)':
Main.cpp:12: error: invalid types `int[4][char*]' for array subscript
make: *** [exe] Error 1
user@debian$
====================================================================
Which isn't unexpected. How to input the enum as argv[1]?
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Dec 2, 2013
I defined
enum boundaryType_t {inside, inlet, outlet, wall, periodic};
now I have file written like this:
inside outlet
I want my program read the file and when encounter any enum type, instead of treating it as a string, I want the program store it in memory as a enum value.
How can I do that?
string s;
ifs>>s;
s // how to convert it to enum???
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Oct 13, 2014
I need to do this simple Battleship game project for my C++ class. Here is my current code so far:
#include <iostream>
#include <array>
#include <string>
using namespace std;
enum BShip{ EMPTY, BTLSHIP, HIT, MISS };
const int BSIZE = 6;
const int BTLSHIP_SIZE = 4;
class Battleship {
private:
array<array<Bship, BSIZE>, BSIZE> sea, hits;
[code]....
For some reason, I'm getting errors on the string and enum declarations.
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May 18, 2014
Code:
void convertNetPay(float netPay, char *netPayString){
int numHuns, numTens, numOnes;
char OnesTable[9][8]={"One","Two","Three","Four","Five","Six","Seven","Eight","Nine"};
char ResultString[10+1];
char TensTable[9][8] = {"Ten","Twenty","Thirty","Forty","Fifty","Sixty","Seventy","Eighty","Ninety"};
char TeensTable[9][10] {"Eleven","Twelve","Thirteen","fourteen","fifteen","Sixteen","Seventeen","Eighteen","Nineteen"};
float cents;
[Code] ....
I have to convert my netpay which is a float to a string So if I input a value of say, 356.26 it should output "the sum of three hundred fifty-six and 26/100 dollars" . My program function works for the sum of three hundred but after that it spits out garbage.
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May 6, 2014
How will I add the existing content of the text file to the newly inputed date(hoursworked & minsWorked) to compute the total number of hours works. I'm just a beginner in using Visual basic C++.
Code:
#include <iostream>
#include <fstream>
#include<string>
#include <cstdlib>
using namespace std;
bool parseTime(char* _timeStr, int& _hour, int& _min) {
[Code] ....
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Dec 7, 2014
I'm trying to find a way to accuratley convert a double in the form of a bank account number stored in a file into a string representing the number returned by a file.
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May 18, 2014
void convertNetPay(float netPay, char *netPayString) {
int numHuns, numTens, numOnes;
char OnesTable[9][8]={"One","Two","Three","Four","Five","Six","Seven","Eight","Nine"};
char ResultString[10+1];
[Code] ....
BASICALLY, I have to convert netpay (float to string). Theoretically if I have 666.66, my program here should output the sum of "six hundred sixty-six and 66/100 dollars".
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May 2, 2013
i think i need to convert a double to a string, we are working in visual studio doing a program. when i run the calculator i'm not getting the answer i need instead its giving me 0.0 when it should be reading 0.5, here is the code i'm using
{int width;
int height;
int area;
double gop;
String ^strWidth;
String ^strHeight;
String ^strArea;
String ^strGop;
strWidth=width1->Text;
[Code]....
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Nov 22, 2013
I'm trying to convert a string into a integer and when I call stoi(line) it causes the program to crash.
int main() {
vector<int> numbers;
int i;
string line;
ifstream myfile ("example.dat");
[Code] ....
The file being read from looks like:
3
12
23
34
12 34
12 12
34 23
23 23
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Feb 21, 2015
In my project i have to take the string valve and convert it into float
For example
100 will be 100.00
100.0012 will be invalid
100.00 will stay as it is
99 will be 99.00
I am thinking of using stof but i m stuck on how to set the precision of 2 ....
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Apr 27, 2014
Quick code for converting strings to Dates in C++.
Example: What is the date:
User response: 12/05/14
Any way I can code this to recognize it as a date, and make it so that the date is sortable? Not referring to the system date, but a user input date.
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Mar 27, 2015
I am trying to convert a 1d string array to a 2d but i couldnt do it. Heres my code so far,
for(i=0;str2d[i][j]='';i++)
{
for(j=0;str2d[i][j]=' ';j++)
{
str2d[i][j] = str1d[k];
k++;
}
}
str1d is a paragraph btw.I tried using NULL instead of '' but didnt work either.
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Mar 19, 2012
how to convert from string to date in c++? Example: 17 mar 2012 to 17/03/2012
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Sep 26, 2013
struct time
{ int t;
int h,m,s;
};
int main() {
time t;
int totalsecond;
char A[10],B[10];
[Code] ....
It gives error at line no 12.
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