Is there a tool or specific syntax to insert cases into switches with consecutive indices and make the indices below adjust

Question

I have a function that takes an integer and returns a string that is picked by a switch. The strings are part of a coherent text and I want to be able to add cases to the switch whenever I want to edit the coherent text that the function returns when called for each consecutive int.

So how the function looks like right now:

std::string proceed(int id){
   switch(id){
      case 1: return "Hello";
      case 2: return "my ";
      case 3: return "is";
      case 4: return "Marc";
   }
}

I would like to be able to insert "Name" after case 2 and before case 3. What I do right now is insert another case 3 : return "Name"; and increase ALL the indices below by 1. Which is very fiddly and horrible workflow.

I am looking for a way to do something like the following, in a C++-legal way:

std::string proceed(int id){

   int i = 0;

   switch(id){
      case ++i: return "Hello";
      case ++i: return "my ";
      case ++i: return "is";
      case ++i: return "Marc";
   }
}

here the case statement always (in code) uses the same symbols, which allows to just dump a case anywhere without adjusting ALL the cases.

Is there any syntax or tool to do this in a neat way? (besides using some separate program for automated text editing)

Answer 1

I thought map was the solution , but vector has the easier insert method:

You can encapsulate it if you need more logic:

#include <iostream>
#include <vector>
#include <string>

void insertAtIndex(std::vector<std::string>& vec, int index, const std::string& newValue) {
    // Insert the new value at the desired index
    if (index <= vec.size()) {
        vec.insert(vec.begin() + index, newValue);
    } else {
        std::cerr << "Invalid index" << std::endl;
    }
}

And simply call it:

int main() {
    // Create a vector to store the strings
    std::vector<std::string> vec = {"Hello", "my", "is", "Marc"};

    // Insert a new value at index 3
    insertAtIndex(vec, 3, "name");

    // Test the function
    for (int i = 0; i <= vec.size(); ++i) {
        std::cout << vec[i] << " ";
    }
    std::cout << std::endl;

    return 0;
}