en:reference:language:return
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| + | ====== return ====== | ||
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| + | |||
| + | Terminate a function and return a value from a function to the calling function, if desired. | ||
| + | |||
| + | |||
| + | ===== Syntax: ===== | ||
| + | |||
| + | return; | ||
| + | return value; < | ||
| + | |||
| + | |||
| + | ===== Parameters ===== | ||
| + | |||
| + | value: any variable or constant type | ||
| + | |||
| + | ===== Examples: ===== | ||
| + | |||
| + | A function to compare a sensor input to a threshold | ||
| + | |||
| + | |||
| + | <code cpp> | ||
| + | int checkSensor(){ | ||
| + | if (analogRead(0) > 400) { | ||
| + | return 1; | ||
| + | else{ | ||
| + | return 0; | ||
| + | } | ||
| + | } | ||
| + | </ | ||
| + | |||
| + | The return keyword is handy to test a section of code without having to " | ||
| + | <code cpp> | ||
| + | void loop(){ | ||
| + | |||
| + | // brilliant code idea to test here | ||
| + | |||
| + | return; | ||
| + | |||
| + | // the rest of a dysfunctional sketch here | ||
| + | // this code will never be executed | ||
| + | } | ||
| + | </ | ||
| + | |||
en/reference/language/return.txt · 最后更改: 2023/06/07 04:23 由 127.0.0.1
