Option 1 is most effective, since it directly prints arguments to the output char by char (see Arduino Print class) and traverses the arguments only once. You can use stdarg.h to create one-liner with Serial.prints:

Selecting Edit > Auto Format or pressing CTRL + T on Windows/Linux or CMD + T on MacOS when writing a sketch in the Arduino IDE 2 will automatically format the sketch. It is possible to change the behaviour of this command.

Apr 23, 2025 · This is a guide for writing clear Arduino examples that can be read by beginners and advanced users alike. You don't have to code this way, but it helps if you want your code to be clear to all levels of users.

May 16, 2014 · The keyboard shortcut is Ctrl-T (Win/Linux) or Cmd-T (Mac) and it is under the Tools Menu. Before I compile code, I almost always hit the keyboard shortcut to see the result. Since I focused on the Arduino IDE, let me know if other environments offer this kind of clean up in the comments.

Sep 25, 2016 · Write the code in a way that makes sense to you. Then, use Ctrl-T in the IDE and it will reformat your code into a pretty common C style that most of us are comfortable with. We each probably have some deviation with the resulting style, but it's a good starting point.

Here's an (obviously non-Arduino) Java-like example of what I'm trying to accomplish: String foo = String.format("%.1f, %.1f\%", temp1, hum1); // "display" is my instance of Adafruit_SSD1306 display.print(foo); So... how can I do something similar in Arduino-compatible C(++)?

When editing your sketches, pressing CTRL+T will re-format the whole program code beautifully, but (by default) to the style which I don't like. It is easy to adjust the auto formatter's default actions (not only for the braces, but for a vast range of options).

Nov 27, 2023 · sprintf() stands for “ string print formatted ”. It formats and stores a series of characters and values in a buffer. It is commonly used in C programming to format strings without printing them to the console. The Arduino sprintf() function is a …

Mar 23, 2021 · Learn how to auto format code in the Arduino IDE for better readability and organization.

Mar 16, 2019 · How do I format an arduino String when I do not want to print it? I know that one can use printf() or other methods to print a formated string and unfortunately that's all I find with google. But that's explicitly not what I'm looking for, I want to assign the formated string to a variable instead.