C++ I cannot solve this error

[ProgrammingRacoon]

Hello I'm fairly new to programming and trying to code a project I came across this error and after a few weeks I cannot do anything about it. Does anyone know what I have to change?

Error says: "An invalid parameter was passed to a function that produces an unrecoverable error if invalid parameters are specified."

#include <iostream>
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;

int main()
{
    string posCorrecta;
    string posIncorrecta;
    string palabra2;
    string wordle = "fuera";
    string palabra = "fuese";

    bool acierto = true;

    for (int i = 0; i < 5; i++) {

        if (palabra[i] == wordle[i]) {

            posCorrecta[i] = palabra[i];

        }
        else {

            for (int k = 0; k < 5; k++) {

                if (palabra[i] == wordle[k]) {

                    posIncorrecta[i] = palabra[i];

                }

            }

        }
        
    }


    if (palabra == wordle) {

        acierto = true;

    }

    for (int j = 0; j < 5; j++) {

        if (posCorrecta[j] == palabra[j]) {

            palabra2 = palabra2 + "[" + posCorrecta[j] + "]";

        }
        else {

            if (posIncorrecta[j] == palabra[j]) {

                palabra2 = palabra2 + "(" + posIncorrecta[j] + ")";

            }
            else {

                palabra2 = palabra2 + palabra[j];

            }

        }

    }

    palabra = palabra2; 

};

Thanks for everything.

 

[BGB]

Try to compile your code here - Online C++ Compiler and see if you get any error.

 

[Deleted member 2829]

You might want to place this error message in some context. I don't think it originates from the code you posted here, as it does not even contain a function call ! Actually the code compiles fine in Visual Studio, but when executing it breaks at line 21 with Exception: subscript out of range. You are treating a C++ string object as if it were a C character array.