What are some examples of string formatting in C++17?

What are some examples of string formatting in C++17?

C++17 introduced the std::format function, which allows for easier and more readable string formatting. For example, you can format a string like this: std::string result = std::format("Hello, {}! You have {} new messages.", name, messageCount);.

Can you show me more complex examples?

Sure! You can use format specifiers for numbers, like this: std::string result = std::format("The value of pi is {:.2f}", 3.14159); This will format pi to two decimal places.

What about formatting dates?

For dates, you can combine std::format with std::chrono. For example: std::string dateStr = std::format("Today is {:%Y-%m-%d}", std::chrono::system_clock::now());.

Is there a way to handle exceptions in formatting?

Yes, you can use a try-catch block around your formatting code to handle exceptions. If the format string is incorrect, it will throw a std::format_error.