How to return multiple types & values in multiple files in C++

I am having trouble in returning multiple types. I know there are a few people who had trouble with this but mine is different. I'm using header files and they're not. So here is my code.

//in Fruit.h
#include <string>
using namespace std; 

class Fruit { 
private:    
    string Fruitname;   
    int Fruitamount; 
public:     
    Fruit(string name, int amount);     
    int getFruitStats();    
    ~Fruit(); 
};

in the C++ file

//in Fruit.cpp
#include "Fruit.h"
#include <tuple>
Fruit::Fruit(string name, int amount)
{
    Fruitname = name;
    Fruitamount = amount;
}
tuple<string,int> Fruit::getFruitStats() {
                        //^this one causes the problem
}

Fruit::~Fruit()
{
}

The error messages as follows:

1. declaration is incompatible with int Fruit::getFruitStats
2. Error C2556 'std::tuple Fruit::getFruitStats(void)': overloaded function differs only by return type from 'int Fruit::getFruitStats(void)'
3. Error C2371 'Fruit::getFruitStats': redefinition; different basic types

I tried changing the Fruit.h's getFruitStats type to integer, string, void but apparently I'm missing something here. Can anyone help me?