how to print hex value of an enum to a string in c++

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How do I convert the hex value of the below enum to a string and store it in a variable.

enum {
    a      = 0x54,
    b,
    c
};

For example

auto value = a;
std::string value_as_hex = to_hex(a);

How do I write to_hex


If you want to print the hex value of an enum you can use printf with the %x placeholder. For example

#include <cstdio>

enum Foo {
    a      = 0x54,
    b      = 0xA6,
    c      = 0xFF
};

int main() {
    Foo e;

    e = a;
    printf("%x\n",e);

    e = b;
    printf("%x\n",e);

    e = c;
    printf("%x\n",e);

}

the output of the program is

54
a6
ff

C# 5.0 Unleashed: C 5.0 Unleashed, Click here to view code image uint value = 0xFF0000; Color c = (Color)value; Three format strings are available on Enum methods that turn an enum value To get the decimal or hexadecimal value, respectively, use D or X. Alternatively,  An enumeration is a user-defined data type that consists of integral constants. To define an enumeration, keyword enum is used. enum flag { const1, const2, , constN }; Here, name of the enumeration is flag. And, const1, const2,…., constN are values of type flag. By default, const1 is 0, const2 is 1 and so on. […]


How about the following solution?

std::ostringstream str;
str << std::hex << a;
auto x = str.str();

C++/CLI: The Visual C++ Language for .NET, The enumeration value can be obtained easily as a string. The other formatting characters specify numeric output in decimal (D or d) or hexadecimal (X or x). 18f> hexadecimal padded with blanks to width 8. 018f hexadecimal padded with four leading zeros. 0000018f padded with eight leading zeros. 0xabcdef automatically add 0x. 0XABCDEF, capital X, automatically add 0X. 0, but don't add 0X if zero. 0xabcdef - no padding is added with #. 0XABCDEF - no padding is added with #. 00000000 - padding is


You could write your to_hex function to store the hex representation of the value in a string using stringstreams and IO manipulation :

#include <iostream>
#include <sstream>

std::string to_hex(const unsigned a) {
    std::stringstream ss;
    ss << "0x" << std::hex << a;
    return ss.str();
}

int main() {
    unsigned value = 0x1234;
    std::string value_as_hex = to_hex(value);

    std::cout << value_as_hex << "\n";
}

Output:

0x1234

Foundations of C++/CLI: The Visual C++ Language for .NET 3.5, if (safe_cast<int>(format) & safe_cast<int>(FontFormat::ITALIC)) { // Use italics. } The enumeration value can be obtained easily as a string. used after the colon determines whether it is displayed as a name, decimal number, or hex number. The hex value for each enum is deciphered as follows: /// DCC X XXXX /// --- - ---- /// | | |--> Notification ID (0x0000 to 0xFFFF) /// | |-----> Notification Type (0x0 to 0xA) /// |-----> Sub-system ID (0xDCC) What is the best way to assign values to the enum's, such that adding enum's later won't mean reassigning all the values. The only Sub-system ID, and Notification Type are chosen, the Notification ID should be automatically assigned.


Kotlin Program to Lookup enum by String value, In this program, you'll learn to convert a string value to a enum in Kotlin using enum's valueOf() method. You are probably storing the value 0xc0 in a char variable, what is probably a signed type, and your value is negative (most significant bit set). Then, when printing, it is converted to int, and to keep the semantical equivalence, the compiler pads the extra bytes with 0xff, so the negative int will have the same numerical value of your negative char.


C# data types - working with data types in CSharp, For example, boolean default value is false, decimal 0, string an empty Integers can be specified in three different notations in C#: decimal, hexadecimal, and binary. These two lines print the enum values to the console. printf("My Value: Invalid Enum Value"); When using enums I often implement a function that returns const char * to convert the enum value to a string of it's name to make it easily accessable for debug messages.


C Basics - C Programming Tutorial, C source code is preprocessed before it is compiled into object code (as illustrated). n", aStr); //The string is Hello. printf("The int (in hex) is %x. Function: return , void (2); Data Structure: struct , enum , union (3); Memory: auto , register  so i'm trying to get the name with out giving it a value. Cause each enum can have duplicate values. I tried this but this just returns the value as a string. so it returns "5"; m_IdleAnimationType.ToString()