How can I iterate through a string in C++?

How can I iterate through a string in C++?

You can use a for loop to iterate through each character in a string. For example:

std::string str = "Hello";
for (char c : str) {
    std::cout << c << ' ';
}

This will print each character in the string.

Can I use iterators instead?

Yes, you can use iterators! Here's how:

std::string str = "Hello";
auto it = str.begin();
while (it != str.end()) {
    std::cout << *it << ' ';
    ++it;
}

This will also print each character.

What about using a while loop?

Certainly! You can use a while loop like this:

std::string str = "Hello";
size_t i = 0;
while (i < str.length()) {
    std::cout << str[i] << ' ';
    ++i;
}

This will achieve the same result.

Are there any other methods to iterate through a string?

Yes, you can also use the std::for_each algorithm from the <algorithm> header:

#include <algorithm>
#include <iostream>
#include <string>

std::string str = "Hello";
std::for_each(str.begin(), str.end(), [](char c) {
    std::cout << c << ' ';
});

This is a more functional approach!