Даны три числа, вывести на экран наименьшее из них.

#include <iostream>
#include <algorithm>
using namespace std;
 
bool myfn(int i, int j) { return i<j; }
 
struct myclass {
  bool operator() (int i,int j) { return i<j; }
} myobj;
 
int main () 
{
  int myints[] = {3,7,2,5,6,4,9};
 
  // using default comparison:
  cout << "The smallest element is " << *min_element(myints,myints+7) << endl;
  cout << "The largest element is " << *max_element(myints,myints+7) << endl;
 
  // using function myfn as comp:
  cout << "The smallest element is " << *min_element(myints,myints+7,myfn) << endl;
  cout << "The largest element is " << *max_element(myints,myints+7,myfn) << endl;
 
  // using object myobj as comp:
  cout << "The smallest element is " << *min_element(myints,myints+7,myobj) << endl;
  cout << "The largest element is " << *max_element(myints,myints+7,myobj) << endl;
 
  return 0;
}

#include "stdafx.h"
#include <iostream>
 
 
int _tmain(int argc, _TCHAR* argv[])
{
    int a,b,c;
   std::cout << "Enter a ";
   std::cin >> a;
   std::cout << "Enter b ";
   std::cin >> b;
   std::cout << "Enter c ";
   std::cin >> c;
 
   if(a>b)
   {
       if(b>c)
           std::cout << c;
       else
           std::cout << b;
   }
   else  
   {
       if(a < b && a < c)
           std::cout << a;
   }
    return 0;
}

#include <iostream> 
 
int main()//=========================================================
{
    int a, b, c;
    std::cout << "Enter a, b, c.\n";
    std::cin >> a >> b >> c;
 
    if ( a > b ) a = b;
    if ( a > c ) a = c;
                   
    std::cout << a << std::endl;
   
    return 0;
}//==================================================================