Su código de C++ es:
sorry, but this is a english only forum...
second: This is a forum about codeblocks and not about c or general programing questions, so this question violates the rules and probably will get locked
Some hint from my side:
C:\Users\Meta\Documents\Code Blocks\Arduino_Led\Arduino_Led\main.cpp|13|error: '::main' must return 'int'|
and now look at this
95% of the errors can be fixed if you read the error message carefully....