VS Arduino - Compiler error when function has struct parameter

Jul 15^th, 2025 at 4:12pm (UTC)

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VS Arduino › › › Compiler error when function has struct parameter

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Compiler error when function has struct parameter (Read 2163 times)

Agner Newbies Offline Posts: 1 Joined: Oct 26^th, 2014	Compiler error when function has struct parameter Oct 26^th, 2014 at 5:30pm	Print Post
	The program below cannot compile on Atmel Studio 6.2 with Visual Micro plugin. The autogenerated header file makes a function prototype for the function parse, but without first declaring the struct Record. The compiler says: "phonelist.ino:6: error: 'Record' was not declared in this scope" The line number in the error message points to an irrelevant line. To reproduce, compile this code: struct Record { unsigned long int phone; char name[18]; }; bool parse(Record * r) { return true; } void setup(){} void loop(){}


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Tim@Visual Micro Administrator Offline Posts: 12191 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Compiler error when function has struct parameter Reply #1 - Oct 27^th, 2014 at 12:36pm	Print Post
	Hi, Yes that is correct, this is how Arduino works and you will see the same error in the Arduino IDE Part of the arduino build process is to automatically create the c++ prototypes for all .ino files. You can avoid this by using cpp files or if you like to make prototypes yourself you can switch off automatic prototypes in the visual micro project properties. The latter is not recommended except for advanced users. Thanks


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