index string c++

To index a string in C++, you can use the [] operator. Here's an example:

#include <iostream>
#include <string>

int main() {
    std::string str = "Hello, World!";
    char letter = str[7];
    std::cout << "The letter at index 7 is: " << letter << std::endl;
    return 0;
}

In this example, the string "Hello, World!" is stored in the variable str. The 7th character of the string is accessed using str[7], and it is assigned to the variable letter. Finally, the value of letter is printed to the console.