String to Int Conversion Challenge in C++: Overcoming Code Issues

[Techi11]

I'm currently tackling a coding problem in C++ that involves converting a string to an integer. Here's a simplified version of the code snippet:

#include <iostream>
#include <string>

int main() {
    std::string numString = "123";
    
    // Attempting string to int conversion
    int convertedNumber = std::stoi(numString);

    // Output the converted integer
    std::cout << "Converted Integer: " << convertedNumber << std::endl;

    return 0;
}

Despite my efforts and also trying to search on multiple sites like Scaler, the code seems to encounter unexpected behavior during the conversion. What potential pitfalls might be causing this issue, and how can I modify the code to ensure a successful conversion from string to integer? Additionally, are there alternative approaches or best practices for handling such conversions in C++?