Help, Functions!

Having some trouble understanding functions. So here it doesn't even run. I think I have the functions mostly right (i just have to get syntax right for middle).

Basically I just have to get the highest, lowest, and middle number from a users input.

I cant get the program to go past the first function. (I dont understand the main)

Can I get some help being put in the right direction?


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  #include <iostream>


using namespace std;

void setFirst(int& first);
void setSecond(int& second);
void setThird(int& third);

int getFirst(int& first);
int getSecond(int& second);
int getThird(int& third);

int getHighest(int first, int second, int third);
int getLowest(int first, int second, int third);
int getMiddle(int first, int second, int third);

void showResults(int first, int second, int third);

int main(){
   int first;
   int second = 2;
   int third = 3;
   
   setFirst(first);
   showResults(first, second, third);
   cin >> first;
   return 0;

   setSecond(second);
   showResults(first, second, third);
   cin >> second;
   return 0;
   
   setThird(third);
   showResults(first, second, third);
   cin >> third;
   return 0;
   
   int getHighest(int first, int second, int third);
   int getLowest(int first, int second, int third);
   int getMiddle(int first, int second, int third);
   
   void showResults(int first, int second, int third);

}

void setFirst(int& first)
{
   cout << "please enter the first number: ";
   cin >> first;
}

void setSecond(int& second)
{
   cout << "please enter the second number: ";
   cin >> second;
}

void setThird(int& third)
{
   cout << "please enter the third number: ";
   cin >> third;
}

int getFirst(int& first)
{
   return first;
}

int getSecond(int& second)
{
   return second;
}


int getThird(int& third)
{
   return third;
}


int getHighest(int first, int second, int third)
{
   int highest;
   highest = getHighest(first, second, third);
   
   if(getSecond(second)>highest)
      highest = second;
   if(getThird(third)>highest)
      highest = third;
      
   return highest;
}

int getLowest(int first, int second, int third)
{
   int lowest;
   lowest = getLowest(first, second, third);
   
   if(getSecond(second)<lowest)
      lowest = second;
   if(getThird(third)<lowest)
      lowest = third;
      
   return lowest;
}

int getMiddle(int first, int second, int third)
{
   int middle;
   middle = getMiddle(first, second, third);
   
   if(getSecond(second)>middle)
      middle = second;
   if(getThird(third)>middle)
      middle = third;
      
   return middle;
}

void showResults(int first, int second, int third){
   cout << "the highest value was: "
        << getHighest(first,second,third) << endl;
   cout << "the middle value was: "
        << getMiddle(first,second,third) << endl;
   cout << "the lowest value was: "
        << getLowest(first,second,third) << endl;
     
}
return ends a function and subsequent code does NOT execute.

in main, you have multiple return 0 statements. Main effectviely ends after the FIRST of those hits, and the rest of the code is ignored.
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