Compiler Error 36

add an #if in the begining or end of the file

example

//the next lines might be missing... or
#ifndef MBED_SAMPLE
#define MBED_SAMPLE

#include "mbed.h"

class sampleClass {
public:
    sampleClass(PinName inPin, int myParam);
    void Bar(int myInp);
    
private:

    void Foo();
    float myValue
};

//this line could be mising
#endif
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