Jak toto pořešit?
void stavrelay()
{
return String(expander.digitalRead(7))
+ String(expander.digitalRead(6))
+ String(expander.digitalRead(5))
+ String(expander.digitalRead(4))
+ String(expander.digitalRead(3))
+ String(expander.digitalRead(2))
+ String(expander.digitalRead(1))
+ String(expander.digitalRead(0)) ;
}
invalid operands of types 'const char [20]' and 'void' to binary 'operator+'void stavrelay()
{
StavExpanderu = String(expander.digitalRead(7))
+ String(expander.digitalRead(6))
+ String(expander.digitalRead(5))
+ String(expander.digitalRead(4))
+ String(expander.digitalRead(3))
+ String(expander.digitalRead(2))
+ String(expander.digitalRead(1))
+ String(expander.digitalRead(0)) ;
return StavExpanderu
}