c++ string to int

To convert a string to an int in C++, you can use the stoi() function. Here are the steps to do this conversion:

1. Include the necessary header file: #include <string>

2. Declare a string variable to hold the input string: std::string inputString;

3. Prompt the user to enter a string: std::cout << "Enter a string: ";

4. Read the input string from the user: std::cin >> inputString;

5. Declare an integer variable to hold the converted value: int convertedInt;

6. Use the stoi() function to convert the string to an int: convertedInt = std::stoi(inputString);

7. Handle any exceptions that might occur during the conversion. The stoi() function throws an std::invalid_argument exception if the input string does not represent a valid integer.

8. Use the converted integer as needed in your program.

That's it! Following these steps will allow you to convert a string to an int in C++.