declaration problems

[ntbolivar]

Im trying to make a program that figures out the smallest of 3 numbers entered by the user and cant get it to work.

here is my program:
---------------------------------------------------------------------

#include "stdafx.h"
#include <iostream>
#include <math.h>
using namespace std;

int smallest(int x, int y, int z);
int small;

int main()
{
int x,y,z;
cout<<"Please enter first number: ";
cin>>x;
cout<<"Please enter second number: ";
cin>>y;
cout<<"Please enter third number: ";
cin>>z;

int smallest(int x, int y, int z);

cout<<small<<" is the smallest number of the three."<<'\n';
}

int smallest(int x, int y, int z)
{
small=x;
if(small>y)
small=y;
if(small>z)
small=z;

return small;
}
------------------------------------------------------------------

whenever i run the program it returns small as 0. and i dont know how to fix it.

[firedraco]

int smallest(int x, int y, int z);

That isn't how you call a function. You call functions like this:

//example function
void function(int a, int b) {
   return; //doing nothing really
}

int main() {
   int z, y;
   function(z, y);
   return 0;
}

Other then that, your code looks OK, although you will probably want to return 0 at the end of main.

[helios]

firedraco seems to have missed that you're not actually assigning the return value of smallest() to the 'small' variable declared in main().