How to format strings in c++?

Code Help C++
1

How do I format strings in c++?
I could do this:

#include <iostream>

int main() {
  std::string name = "Dude";
  std::cout << "Hello, " << name << "!";
}

But I want something like this:

#include <iostream>

int main() {
  std::string name = "Dude";
  std::cout << "Hello, {name}!";
}
2

Hello @SnakeyKing welcam to da fowumz!

To format strings in C++, you can use the std::cout object and the << operator.

In your first example, you’re concatenating the string "Hello, " with the value of the name variable using the << operator. This is a common way to format strings in C++.

In your second example, you’re trying to use Python-like string formatting with the << operator. However, this syntax is not supported in C++. C++ uses a different approach for string formatting.

If you want to achieve a similar result as your second example, you can use the std::format function from the <format> header in C++20 and later. Here’s an example:

cppCopy code

#include <iostream>
#include <format>

int main() {
  std::string name = "Dude";
  std::cout << std::format("Hello, {}!", name);
  return 0;
}

In this code, the std::format function is used to format the string. The {} placeholder is replaced with the value of the name variable.

Please note that the std::format function is only available in C++20 and later. If you are using an earlier version of C++, you can consider using libraries like fmt or boost.format for string formatting.

1 Like
3

I’m using a repl. Is Replit’s C++ template’s version over 20?

4

uwu you can try uwu

but yes it can work but if nwo work then use the lib fmt or boost.format

5

How do I use them???