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Convert variables from one type to another in Arduino
In order to convert variables from one type to another, you use the CAST operator. The syntax is −
(type) var;
Where var is the variable to be casted, and type is the new type to which you wish to convert it. For example, if you have a variable of type float, and wish to cast it as an int.
Example
Here’s how you can do it −
float f;
int i;
void setup() {
// put your setup code here, to run once:
f = 5.6;
i = (int) f;
Serial.println(f);
Serial.println(i);
}
void loop() {
// put your main code here, to run repeatedly:
}The Serial Monitor will print 5.6 followed by 5 (and not 6). This is because casting a float to int truncates the float, doesn’t round it.
Updated on: 31-Jul-2021
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