This is a program to sort three inputted integers in order, from least to greatest. I would like to have it reviewed.

#include <iostream>

void Sort(int &a, int &b, int &c){
    if(a>b){
        int tmp = a;
        a = b;
        b = tmp;
    }
    if(a>c){
        int tmp = a;
        a=c;
        c = tmp;
    }
    if(b>c){
        int tmp = b;
        b=c;
        c=tmp;
    }
    return;
}

int main(){
    std::cout << "Enter three integers: " << std::endl;
    int num1;
    int num2;
    int num3;
    std::cin >> num1 >> num2 >> num3;

    int output1 = num1;
    int output2 = num2;
    int output3 = num3;

    Sort(output1,output2,output3);

    std::cout << num1 << " " << num2 << " " << num3 << " "
         << " in sorted order: ";
    std::cout << output1 << " " << output2 << " " << output3 << std::endl;

    return 0;
}