I'm

Code:
// 1 .cpp
//
// Write a program that inputs three integers from the keyboards and prints the sum, average, 
// product, smallest and largest of these numbers.
//
// The screen dialog should appear as follows:
// Input three different integers: 13 27 14
// Sum is 54
// Average is 18
// Product is 4914
// Smallest is 13
// Largest is 27

// Include preprocessing directive as done below:

#include <iostream>

// Include all of the other yummy crap below

using std::cout;
using std::cin;
using std::endl;

// Remember to always start the actual program with function "main()"

int main()
{
	cout << "Input your three numbers: ";

int a;
int b;
int c;
int all;

		cin >> a >> b >> c;
			all = a + b + c;

	cout << "\nThe sum of your three integers is " << all << "\n";
			all = (a + b + c) / 3;

	cout << "The average of your three integers is " << all << "\n";
			all = a * b * c;

	cout << "The product of your three integers is " << all << "\n";

if (a < b && a < c)
	cout << "Out of the three integers that you input " << a << " is the smallest of them all\n";

if (b < a && b < c)
	cout << "Out of the three integers that you input " << b << " is the smallest of them all\n";

if (c < a && c < b)
	cout << "Out of the three integers that you input " << c << " is the smallest of them all\n";

if (a == b)
	cout << "Out of the three integers that you input " << a << " and " << b << " are tied for being the smallest numbers\n";

if (a == c && a != b)
	cout << "Out of the three integers that you input " << a << " and " << c << " are tied for being the smallest numbers\n";

if (b == c && b != a)
	cout << "Out of the three integers that you input " << b << " and " << c << " are tied for being the smallest numbers\n";

if ( a == b && b == c)
	cout << "All of the numbers that you have entered are the exact same!, or there is an error!\n";

cin >> a;

return 0;
}

I'm learning this stuff out of a book. It's asking me tell the user which integer out of the three that they input which is smallest. Is there a math equation to find out which of the three numbers is the smallest because it says not to use anything not mentioned in the chapter I'm not even suppose to use &&