stoi cpp

stoi() is a function in C++ that converts a string to an integer.

Here's a simple explanation of how it works: - The function stoi() takes a string as input and converts it into an integer. - It stops converting when it encounters a non-numeric character. - If the input string is empty or doesn't contain any valid integer representation, stoi() throws an exception of type invalid_argument or out_of_range.

For example:

#include <iostream>
#include <string>

int main() {
  std::string str = "12345";
  int num = std::stoi(str);
  std::cout << "The converted integer is: " << num << std::endl;
  return 0;
}