Compiler Error 291

Possibly while creating an object, the name was not specified

#include "mbed.h"

//problem in the following line..
Serial (USBTX, USBRX);
//assign a name, ex: Serial pc(USBTX, USBRX);

int main() {
    for (;;) {
        wait(1);
        pc.printf("Hello World\n\r\a");
    }
}

When creating a new class, make sure that all objects are specified and initialized properly in the constructor, e.g.

#include "mbed.h"

class Foo{

public:
    Foo(): _pc(USBTX,USBRX){};

private:
   Serial _pc;
};
All wikipages