c++ edit specific index of string code example

Example 1: index string c++

#include <string>
#include <iostream>

int main(){
  //index string by using brackets []
  std::string string = "Hello, World!";
  //assign variable to string index
  char stringindex = string[2];
  
}

Example 2: replace a char in string c++ at a specific index

string a = "lol";
	a[2] = 'j';
	cout << a;
//output: loj