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How to Convert a std::string to char* in C++?

How to Convert an Enum to a String in C++?

Last Updated : 21 Feb, 2024

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In C, an enumeration is a user-defined data type whose members can be assigned some integer values. In this article, we are going to discuss how to convert an Enum to a String in C++.

Example:

Input:  myColor = GREEN;  Output:  Green

Convert an Enum to a String in C++

There are various methods to convert an enum to a string. A typical practice to convert an enum into a string is creating the mapping between values of enums and their string representations.

Approach

Define an enum that represents a collection of related constants, assigning each constant a meaningful name.
Use map to create a connection between enum values and their corresponding string representations.
Establish a clear association between each enum value and its corresponding string by populating the mapping data structure.
Develop a function that takes an enum value as input and returns its associated string by referencing the established mapping.
Return the corresponding string from the function based on the enum parameter.

C++ Program to Convert an Enum to a String

C++

// C++ Program to Convert an Enum to a String #include <iostream> #include <map> using namespace std;  // Define an enumeration named Color with constants RED, // GREEN, and BLUE enum Color { RED, GREEN, BLUE };  // Create a mapping from Color enum values to corresponding // strings map<Color, string> colorToString = { { RED, "Red" },                                      { GREEN, "Green" },                                      { BLUE, "Blue" } };  // Function to convert a Color enum value to its string // representation string enumToString(Color color) {     return colorToString[color]; } // Driver Code int main() {     // Declare a variable 'myColor' and assign it the value     // GREEN     Color myColor = GREEN;      // Display the string representation of the enum using     // the conversion function     cout << "Color: " << enumToString(myColor) << endl;      return 0; }

Output

Color: Green

Time Complexity: O(1)
Space Complexity: O(N), N is the number of items in the enum.

How to Convert a std::string to char* in C++?

rajpootveerendrasingh36

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Article Tags :

C++ Programs
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cpp-map
C++ Conversion Programs
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