How to convert HEX number in DEC

[SteveMann]

@ronyelson12

String musicnumber = 0000004F;     /// this is a example number, need be a String cuz i'm working with "String.substring" Functions on this code.


void setup() {
Serial.begin (115200)

}

void loop() {
  Serial.println ()   /// How can i do to print  "79"

}

Exact same question a month ago:

Converting The value receive from hex string to Decimal

Hello, I am try to convert the HEX String to Decimal value .. for an example , int Byte 1 : 7A int Byte 2 :2A String x= 7A2A i need to convert this value to decimal value..thank you...