Arduino Char to Int

When dealing with characters in Arduino, it can be helpful to convert them to integers for various reasons, such as performing mathematical operations or checking their ASCII values. In this tutorial, we will explore how to convert characters to integers in Arduino.

Converting a Single Character to an Integer

To convert a single character to an integer, we can use the built-in toInt() function. This function converts the character to its ASCII value, which is an integer.

Here is an example:

char myChar = 'A'; // define a character
int myInt = myChar.toInt(); // convert the character to an integer

In this example, myChar is set to the character 'A'. We then use the toInt() function to convert it to an integer, which is stored in the variable myInt.

Converting a String of Characters to an Integer

If we have a string of characters that we want to convert to an integer, we can use the atoi() function. This function converts a string of characters to an integer.

Here is an example:

char myString[] = "123"; // define a string
int myInt = atoi(myString); // convert the string to an integer

In this example, myString is set to the string of characters "123". We then use the atoi() function to convert it to an integer, which is stored in the variable myInt.

Conclusion

Converting characters to integers in Arduino is a simple process that can be useful in many applications. Whether you need to perform mathematical operations or check the ASCII values of characters, converting them to integers can be a helpful technique.